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df79b9b27a
* get_class_name is now only used for displaying the class name in debugging functions like var_dump, print_r, etc. It is no longer used in get_class() etc. * As it is no longer used in get_parent_class() the parent argument is now gone. This also fixes incorrect parent classes being reported in COM. * get_class_name is now always required (previously some places made it optional and some required it) and is also required to return a non-NULL value. * Remove zend_get_object_classname. This also fixes a number of potential leaks due to incorrect usage of this function.
1664 lines
51 KiB
C
1664 lines
51 KiB
C
/*
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+----------------------------------------------------------------------+
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| Zend Engine |
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+----------------------------------------------------------------------+
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| Copyright (c) 1998-2014 Zend Technologies Ltd. (http://www.zend.com) |
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+----------------------------------------------------------------------+
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| This source file is subject to version 2.00 of the Zend license, |
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| that is bundled with this package in the file LICENSE, and is |
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| available through the world-wide-web at the following url: |
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| http://www.zend.com/license/2_00.txt. |
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| If you did not receive a copy of the Zend license and are unable to |
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| obtain it through the world-wide-web, please send a note to |
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| license@zend.com so we can mail you a copy immediately. |
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+----------------------------------------------------------------------+
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| Authors: Andi Gutmans <andi@zend.com> |
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| Zeev Suraski <zeev@zend.com> |
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+----------------------------------------------------------------------+
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*/
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/* $Id$ */
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#include "zend.h"
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#include "zend_globals.h"
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#include "zend_variables.h"
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#include "zend_API.h"
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#include "zend_objects.h"
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#include "zend_objects_API.h"
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#include "zend_object_handlers.h"
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#include "zend_interfaces.h"
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#include "zend_closures.h"
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#include "zend_compile.h"
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#include "zend_hash.h"
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#define DEBUG_OBJECT_HANDLERS 0
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/* guard flags */
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#define IN_GET (1<<0)
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#define IN_SET (1<<1)
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#define IN_UNSET (1<<2)
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#define IN_ISSET (1<<3)
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#define Z_OBJ_PROTECT_RECURSION(zval_p) \
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do { \
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if (Z_OBJ_APPLY_COUNT_P(zval_p) >= 3) { \
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zend_error(E_ERROR, "Nesting level too deep - recursive dependency?"); \
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} \
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Z_OBJ_INC_APPLY_COUNT_P(zval_p); \
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} while (0)
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#define Z_OBJ_UNPROTECT_RECURSION(zval_p) \
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Z_OBJ_DEC_APPLY_COUNT_P(zval_p)
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/*
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__X accessors explanation:
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if we have __get and property that is not part of the properties array is
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requested, we call __get handler. If it fails, we return uninitialized.
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if we have __set and property that is not part of the properties array is
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set, we call __set handler. If it fails, we do not change the array.
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for both handlers above, when we are inside __get/__set, no further calls for
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__get/__set for this property of this object will be made, to prevent endless
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recursion and enable accessors to change properties array.
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if we have __call and method which is not part of the class function table is
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called, we cal __call handler.
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*/
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ZEND_API void rebuild_object_properties(zend_object *zobj) /* {{{ */
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{
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if (!zobj->properties) {
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zend_property_info *prop_info;
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zend_class_entry *ce = zobj->ce;
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ALLOC_HASHTABLE(zobj->properties);
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zend_hash_init(zobj->properties, ce->default_properties_count, NULL, ZVAL_PTR_DTOR, 0);
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if (ce->default_properties_count) {
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ZEND_HASH_FOREACH_PTR(&ce->properties_info, prop_info) {
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if (/*prop_info->ce == ce &&*/
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(prop_info->flags & ZEND_ACC_STATIC) == 0 &&
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prop_info->offset >= 0 &&
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Z_TYPE(zobj->properties_table[prop_info->offset]) != IS_UNDEF) {
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zval zv;
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ZVAL_INDIRECT(&zv, &zobj->properties_table[prop_info->offset]);
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zend_hash_add_new(zobj->properties, prop_info->name, &zv);
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}
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} ZEND_HASH_FOREACH_END();
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while (ce->parent && ce->parent->default_properties_count) {
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ce = ce->parent;
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ZEND_HASH_FOREACH_PTR(&ce->properties_info, prop_info) {
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if (prop_info->ce == ce &&
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(prop_info->flags & ZEND_ACC_STATIC) == 0 &&
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(prop_info->flags & ZEND_ACC_PRIVATE) != 0 &&
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prop_info->offset >= 0 &&
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Z_TYPE(zobj->properties_table[prop_info->offset]) != IS_UNDEF) {
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zval zv;
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ZVAL_INDIRECT(&zv, &zobj->properties_table[prop_info->offset]);
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zend_hash_add(zobj->properties, prop_info->name, &zv);
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}
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} ZEND_HASH_FOREACH_END();
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}
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}
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}
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}
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/* }}} */
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ZEND_API HashTable *zend_std_get_properties(zval *object TSRMLS_DC) /* {{{ */
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{
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zend_object *zobj;
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zobj = Z_OBJ_P(object);
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if (!zobj->properties) {
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rebuild_object_properties(zobj);
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}
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return zobj->properties;
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}
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/* }}} */
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ZEND_API HashTable *zend_std_get_gc(zval *object, zval **table, int *n TSRMLS_DC) /* {{{ */
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{
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if (Z_OBJ_HANDLER_P(object, get_properties) != zend_std_get_properties) {
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*table = NULL;
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*n = 0;
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return Z_OBJ_HANDLER_P(object, get_properties)(object TSRMLS_CC);
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} else {
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zend_object *zobj = Z_OBJ_P(object);
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*table = zobj->properties_table;
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*n = zobj->ce->default_properties_count;
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return zobj->properties;
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}
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}
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/* }}} */
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ZEND_API HashTable *zend_std_get_debug_info(zval *object, int *is_temp TSRMLS_DC) /* {{{ */
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{
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zend_class_entry *ce = Z_OBJCE_P(object);
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zval retval;
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HashTable *ht;
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if (!ce->__debugInfo) {
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*is_temp = 0;
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return Z_OBJ_HANDLER_P(object, get_properties)
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? Z_OBJ_HANDLER_P(object, get_properties)(object TSRMLS_CC)
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: NULL;
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}
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zend_call_method_with_0_params(object, ce, &ce->__debugInfo, ZEND_DEBUGINFO_FUNC_NAME, &retval);
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if (Z_TYPE(retval) == IS_ARRAY) {
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if (Z_IMMUTABLE(retval)) {
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*is_temp = 1;
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ALLOC_HASHTABLE(ht);
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zend_array_dup(ht, Z_ARRVAL(retval));
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return ht;
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} else if (Z_REFCOUNT(retval) <= 1) {
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*is_temp = 1;
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ALLOC_HASHTABLE(ht);
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*ht = *Z_ARRVAL(retval);
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efree_size(Z_ARR(retval), sizeof(zend_array));
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return ht;
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} else {
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*is_temp = 0;
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zval_ptr_dtor(&retval);
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return Z_ARRVAL(retval);
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}
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} else if (Z_TYPE(retval) == IS_NULL) {
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*is_temp = 1;
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ALLOC_HASHTABLE(ht);
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zend_hash_init(ht, 0, NULL, ZVAL_PTR_DTOR, 0);
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return ht;
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}
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zend_error_noreturn(E_ERROR, ZEND_DEBUGINFO_FUNC_NAME "() must return an array");
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return NULL; /* Compilers are dumb and don't understand that noreturn means that the function does NOT need a return value... */
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}
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/* }}} */
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static void zend_std_call_getter(zval *object, zval *member, zval *retval TSRMLS_DC) /* {{{ */
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{
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zend_class_entry *ce = Z_OBJCE_P(object);
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/* __get handler is called with one argument:
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property name
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it should return whether the call was successfull or not
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*/
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if (Z_REFCOUNTED_P(member)) Z_ADDREF_P(member);
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zend_call_method_with_1_params(object, ce, &ce->__get, ZEND_GET_FUNC_NAME, retval, member);
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zval_ptr_dtor(member);
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}
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/* }}} */
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static int zend_std_call_setter(zval *object, zval *member, zval *value TSRMLS_DC) /* {{{ */
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{
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zval retval;
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int result;
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zend_class_entry *ce = Z_OBJCE_P(object);
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if (Z_REFCOUNTED_P(member)) Z_ADDREF_P(member);
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if (Z_REFCOUNTED_P(value)) Z_ADDREF_P(value);
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/* __set handler is called with two arguments:
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property name
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value to be set
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it should return whether the call was successfull or not
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*/
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zend_call_method_with_2_params(object, ce, &ce->__set, ZEND_SET_FUNC_NAME, &retval, member, value);
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zval_ptr_dtor(member);
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zval_ptr_dtor(value);
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if (Z_TYPE(retval) != IS_UNDEF) {
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result = i_zend_is_true(&retval TSRMLS_CC) ? SUCCESS : FAILURE;
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zval_ptr_dtor(&retval);
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return result;
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} else {
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return FAILURE;
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}
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}
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/* }}} */
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static void zend_std_call_unsetter(zval *object, zval *member TSRMLS_DC) /* {{{ */
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{
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zend_class_entry *ce = Z_OBJCE_P(object);
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/* __unset handler is called with one argument:
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property name
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*/
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if (Z_REFCOUNTED_P(member)) Z_ADDREF_P(member);
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zend_call_method_with_1_params(object, ce, &ce->__unset, ZEND_UNSET_FUNC_NAME, NULL, member);
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zval_ptr_dtor(member);
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}
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/* }}} */
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static void zend_std_call_issetter(zval *object, zval *member, zval *retval TSRMLS_DC) /* {{{ */
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{
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zend_class_entry *ce = Z_OBJCE_P(object);
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/* __isset handler is called with one argument:
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property name
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it should return whether the property is set or not
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*/
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if (Z_REFCOUNTED_P(member)) Z_ADDREF_P(member);
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zend_call_method_with_1_params(object, ce, &ce->__isset, ZEND_ISSET_FUNC_NAME, retval, member);
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zval_ptr_dtor(member);
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}
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/* }}} */
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static zend_always_inline int zend_verify_property_access(zend_property_info *property_info, zend_class_entry *ce TSRMLS_DC) /* {{{ */
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{
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switch (property_info->flags & ZEND_ACC_PPP_MASK) {
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case ZEND_ACC_PUBLIC:
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return 1;
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case ZEND_ACC_PROTECTED:
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return zend_check_protected(property_info->ce, EG(scope));
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case ZEND_ACC_PRIVATE:
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if ((ce==EG(scope) || property_info->ce == EG(scope)) && EG(scope)) {
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return 1;
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} else {
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return 0;
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}
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break;
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}
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return 0;
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}
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/* }}} */
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static zend_always_inline zend_bool is_derived_class(zend_class_entry *child_class, zend_class_entry *parent_class) /* {{{ */
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{
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child_class = child_class->parent;
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while (child_class) {
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if (child_class == parent_class) {
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return 1;
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}
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child_class = child_class->parent;
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}
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return 0;
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}
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/* }}} */
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static zend_always_inline struct _zend_property_info *zend_get_property_info_quick(zend_class_entry *ce, zend_string *member, int silent, void **cache_slot TSRMLS_DC) /* {{{ */
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{
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zend_property_info *property_info;
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zend_property_info *scope_property_info;
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zend_bool denied_access = 0;
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if (cache_slot && EXPECTED(ce == CACHED_PTR_EX(cache_slot))) {
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property_info = CACHED_PTR_EX(cache_slot + 1);
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if (UNEXPECTED(!property_info)) {
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EG(std_property_info).flags = ZEND_ACC_PUBLIC;
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EG(std_property_info).name = member;
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EG(std_property_info).ce = ce;
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EG(std_property_info).offset = -1;
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property_info = &EG(std_property_info);
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}
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return property_info;
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}
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if (UNEXPECTED(member->val[0] == '\0')) {
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if (!silent) {
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if (member->len == 0) {
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zend_error_noreturn(E_ERROR, "Cannot access empty property");
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} else {
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zend_error_noreturn(E_ERROR, "Cannot access property started with '\\0'");
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}
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}
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return NULL;
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}
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property_info = NULL;
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if ((property_info = zend_hash_find_ptr(&ce->properties_info, member)) != NULL) {
|
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if (UNEXPECTED((property_info->flags & ZEND_ACC_SHADOW) != 0)) {
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/* if it's a shadow - go to access it's private */
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property_info = NULL;
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} else {
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if (EXPECTED(zend_verify_property_access(property_info, ce TSRMLS_CC) != 0)) {
|
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if (EXPECTED((property_info->flags & ZEND_ACC_CHANGED) != 0)
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&& EXPECTED(!(property_info->flags & ZEND_ACC_PRIVATE))) {
|
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/* We still need to make sure that we're not in a context
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* where the right property is a different 'statically linked' private
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* continue checking below...
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*/
|
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} else {
|
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if (UNEXPECTED((property_info->flags & ZEND_ACC_STATIC) != 0) && !silent) {
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zend_error(E_STRICT, "Accessing static property %s::$%s as non static", ce->name->val, member->val);
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}
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if (cache_slot) {
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CACHE_POLYMORPHIC_PTR_EX(cache_slot, ce, property_info);
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}
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return property_info;
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}
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} else {
|
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/* Try to look in the scope instead */
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denied_access = 1;
|
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}
|
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}
|
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}
|
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if (EG(scope) != ce
|
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&& EG(scope)
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&& is_derived_class(ce, EG(scope))
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&& (scope_property_info = zend_hash_find_ptr(&EG(scope)->properties_info, member)) != NULL
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&& scope_property_info->flags & ZEND_ACC_PRIVATE) {
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if (cache_slot) {
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CACHE_POLYMORPHIC_PTR_EX(cache_slot, ce, scope_property_info);
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}
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return scope_property_info;
|
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} else if (property_info) {
|
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if (UNEXPECTED(denied_access != 0)) {
|
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/* Information was available, but we were denied access. Error out. */
|
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if (!silent) {
|
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zend_error_noreturn(E_ERROR, "Cannot access %s property %s::$%s", zend_visibility_string(property_info->flags), ce->name->val, member->val);
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}
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return NULL;
|
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} else {
|
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/* fall through, return property_info... */
|
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if (cache_slot) {
|
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CACHE_POLYMORPHIC_PTR_EX(cache_slot, ce, property_info);
|
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}
|
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}
|
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} else {
|
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if (cache_slot) {
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CACHE_POLYMORPHIC_PTR_EX(cache_slot, ce, NULL);
|
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}
|
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EG(std_property_info).flags = ZEND_ACC_PUBLIC;
|
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EG(std_property_info).name = member;
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EG(std_property_info).ce = ce;
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EG(std_property_info).offset = -1;
|
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property_info = &EG(std_property_info);
|
|
}
|
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return property_info;
|
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}
|
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/* }}} */
|
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|
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ZEND_API struct _zend_property_info *zend_get_property_info(zend_class_entry *ce, zend_string *member, int silent TSRMLS_DC) /* {{{ */
|
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{
|
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return zend_get_property_info_quick(ce, member, silent, NULL TSRMLS_CC);
|
|
}
|
|
/* }}} */
|
|
|
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ZEND_API int zend_check_property_access(zend_object *zobj, zend_string *prop_info_name TSRMLS_DC) /* {{{ */
|
|
{
|
|
zend_property_info *property_info;
|
|
const char *class_name = NULL;
|
|
const char *prop_name;
|
|
zend_string *member;
|
|
size_t prop_name_len;
|
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|
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if (prop_info_name->val[0] == 0) {
|
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zend_unmangle_property_name_ex(prop_info_name, &class_name, &prop_name, &prop_name_len);
|
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member = zend_string_init(prop_name, prop_name_len, 0);
|
|
} else {
|
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member = zend_string_copy(prop_info_name);
|
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}
|
|
property_info = zend_get_property_info_quick(zobj->ce, member, 1, NULL TSRMLS_CC);
|
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zend_string_release(member);
|
|
if (!property_info) {
|
|
return FAILURE;
|
|
}
|
|
if (class_name && class_name[0] != '*') {
|
|
if (!(property_info->flags & ZEND_ACC_PRIVATE)) {
|
|
/* we we're looking for a private prop but found a non private one of the same name */
|
|
return FAILURE;
|
|
} else if (strcmp(prop_info_name->val+1, property_info->name->val+1)) {
|
|
/* we we're looking for a private prop but found a private one of the same name but another class */
|
|
return FAILURE;
|
|
}
|
|
}
|
|
return zend_verify_property_access(property_info, zobj->ce TSRMLS_CC) ? SUCCESS : FAILURE;
|
|
}
|
|
/* }}} */
|
|
|
|
static zend_long *zend_get_property_guard(zend_object *zobj, zend_property_info *property_info, zval *member) /* {{{ */
|
|
{
|
|
zend_property_info info;
|
|
zval stub, *guard;
|
|
zend_string *str = NULL;
|
|
|
|
if (!property_info) {
|
|
property_info = &info;
|
|
info.name = Z_STR_P(member);
|
|
} else if(property_info->name->val[0] == '\0'){
|
|
const char *class_name = NULL, *prop_name = NULL;
|
|
size_t prop_name_len;
|
|
zend_unmangle_property_name_ex(property_info->name, &class_name,
|
|
&prop_name, &prop_name_len);
|
|
if (class_name) {
|
|
/* use unmangled name for protected properties */
|
|
str = info.name = zend_string_init(prop_name, prop_name_len, 0);
|
|
property_info = &info;
|
|
}
|
|
}
|
|
if (!zobj->guards) {
|
|
ALLOC_HASHTABLE(zobj->guards);
|
|
zend_hash_init(zobj->guards, 8, NULL, NULL, 0);
|
|
} else if ((guard = zend_hash_find(zobj->guards, property_info->name)) != NULL) {
|
|
if (str) {
|
|
zend_string_release(str);
|
|
}
|
|
return &Z_LVAL_P(guard);
|
|
}
|
|
|
|
ZVAL_LONG(&stub, 0);
|
|
guard = zend_hash_add_new(zobj->guards, property_info->name, &stub);
|
|
if (str) {
|
|
zend_string_release(str);
|
|
}
|
|
return &Z_LVAL_P(guard);
|
|
}
|
|
/* }}} */
|
|
|
|
zval *zend_std_read_property(zval *object, zval *member, int type, void **cache_slot, zval *rv TSRMLS_DC) /* {{{ */
|
|
{
|
|
zend_object *zobj;
|
|
zval tmp_member;
|
|
zval *retval;
|
|
zend_property_info *property_info;
|
|
int silent;
|
|
|
|
silent = (type == BP_VAR_IS);
|
|
zobj = Z_OBJ_P(object);
|
|
|
|
ZVAL_UNDEF(&tmp_member);
|
|
if (UNEXPECTED(Z_TYPE_P(member) != IS_STRING)) {
|
|
ZVAL_STR(&tmp_member, zval_get_string(member));
|
|
member = &tmp_member;
|
|
cache_slot = NULL;
|
|
}
|
|
|
|
#if DEBUG_OBJECT_HANDLERS
|
|
fprintf(stderr, "Read object #%d property: %s\n", Z_OBJ_HANDLE_P(object), Z_STRVAL_P(member));
|
|
#endif
|
|
|
|
/* make zend_get_property_info silent if we have getter - we may want to use it */
|
|
property_info = zend_get_property_info_quick(zobj->ce, Z_STR_P(member), silent || (zobj->ce->__get != NULL), cache_slot TSRMLS_CC);
|
|
|
|
if (EXPECTED(property_info != NULL)) {
|
|
if (EXPECTED((property_info->flags & ZEND_ACC_STATIC) == 0) &&
|
|
property_info->offset >= 0) {
|
|
retval = &zobj->properties_table[property_info->offset];
|
|
if (Z_TYPE_P(retval) != IS_UNDEF) {
|
|
goto exit;
|
|
}
|
|
} else if (UNEXPECTED(zobj->properties != NULL)) {
|
|
retval = zend_hash_find(zobj->properties, property_info->name);
|
|
if (retval) goto exit;
|
|
}
|
|
}
|
|
|
|
/* magic get */
|
|
if (zobj->ce->__get) {
|
|
zend_long *guard = zend_get_property_guard(zobj, property_info, member);
|
|
if (!((*guard) & IN_GET)) {
|
|
zval tmp_object;
|
|
|
|
/* have getter - try with it! */
|
|
ZVAL_COPY(&tmp_object, object);
|
|
*guard |= IN_GET; /* prevent circular getting */
|
|
zend_std_call_getter(&tmp_object, member, rv TSRMLS_CC);
|
|
*guard &= ~IN_GET;
|
|
|
|
if (Z_TYPE_P(rv) != IS_UNDEF) {
|
|
retval = rv;
|
|
if (!Z_ISREF_P(rv) &&
|
|
(type == BP_VAR_W || type == BP_VAR_RW || type == BP_VAR_UNSET)) {
|
|
SEPARATE_ZVAL(rv);
|
|
if (UNEXPECTED(Z_TYPE_P(rv) != IS_OBJECT)) {
|
|
zend_error(E_NOTICE, "Indirect modification of overloaded property %s::$%s has no effect", zobj->ce->name->val, Z_STRVAL_P(member));
|
|
}
|
|
}
|
|
} else {
|
|
retval = &EG(uninitialized_zval);
|
|
}
|
|
zval_ptr_dtor(&tmp_object);
|
|
} else {
|
|
if (Z_STRVAL_P(member)[0] == '\0') {
|
|
if (Z_STRLEN_P(member) == 0) {
|
|
zend_error(E_ERROR, "Cannot access empty property");
|
|
} else {
|
|
zend_error(E_ERROR, "Cannot access property started with '\\0'");
|
|
}
|
|
}
|
|
if (!silent) {
|
|
zend_error(E_NOTICE,"Undefined property: %s::$%s", zobj->ce->name->val, Z_STRVAL_P(member));
|
|
}
|
|
retval = &EG(uninitialized_zval);
|
|
}
|
|
} else {
|
|
if (!silent) {
|
|
zend_error(E_NOTICE,"Undefined property: %s::$%s", zobj->ce->name->val, Z_STRVAL_P(member));
|
|
}
|
|
retval = &EG(uninitialized_zval);
|
|
}
|
|
|
|
exit:
|
|
if (UNEXPECTED(Z_TYPE(tmp_member) != IS_UNDEF)) {
|
|
if (Z_REFCOUNTED_P(retval)) Z_ADDREF_P(retval);
|
|
zval_ptr_dtor(&tmp_member);
|
|
if (Z_REFCOUNTED_P(retval)) Z_DELREF_P(retval);
|
|
}
|
|
return retval;
|
|
}
|
|
/* }}} */
|
|
|
|
ZEND_API void zend_std_write_property(zval *object, zval *member, zval *value, void **cache_slot TSRMLS_DC) /* {{{ */
|
|
{
|
|
zend_object *zobj;
|
|
zval tmp_member;
|
|
zval *variable_ptr;
|
|
zend_property_info *property_info;
|
|
|
|
zobj = Z_OBJ_P(object);
|
|
|
|
ZVAL_UNDEF(&tmp_member);
|
|
if (UNEXPECTED(Z_TYPE_P(member) != IS_STRING)) {
|
|
ZVAL_STR(&tmp_member, zval_get_string(member));
|
|
member = &tmp_member;
|
|
cache_slot = NULL;
|
|
}
|
|
|
|
property_info = zend_get_property_info_quick(zobj->ce, Z_STR_P(member), (zobj->ce->__set != NULL), cache_slot TSRMLS_CC);
|
|
|
|
if (EXPECTED(property_info != NULL)) {
|
|
if (EXPECTED((property_info->flags & ZEND_ACC_STATIC) == 0) &&
|
|
property_info->offset >= 0) {
|
|
variable_ptr = &zobj->properties_table[property_info->offset];
|
|
if (Z_TYPE_P(variable_ptr) != IS_UNDEF) {
|
|
goto found;
|
|
}
|
|
} else if (EXPECTED(zobj->properties != NULL)) {
|
|
if ((variable_ptr = zend_hash_find(zobj->properties, property_info->name)) != NULL) {
|
|
found:
|
|
/* if we already have this value there, we don't actually need to do anything */
|
|
if (EXPECTED(variable_ptr != value)) {
|
|
/* if we are assigning reference, we shouldn't move it, but instead assign variable
|
|
to the same pointer */
|
|
if (Z_ISREF_P(variable_ptr)) {
|
|
zval garbage;
|
|
|
|
ZVAL_COPY_VALUE(&garbage, Z_REFVAL_P(variable_ptr)); /* old value should be destroyed */
|
|
|
|
/* To check: can't *variable_ptr be some system variable like error_zval here? */
|
|
if (UNEXPECTED(Z_REFCOUNTED_P(value))) {
|
|
if (EXPECTED(!Z_ISREF_P(value))) {
|
|
Z_ADDREF_P(value);
|
|
} else {
|
|
if (Z_REFCOUNT_P(value) == 1) {
|
|
ZVAL_UNREF(value);
|
|
} else {
|
|
value = Z_REFVAL_P(value);
|
|
}
|
|
if (Z_REFCOUNTED_P(value)) {
|
|
if (UNEXPECTED(Z_REFVAL_P(variable_ptr) == value)) {
|
|
goto exit;
|
|
}
|
|
Z_ADDREF_P(value);
|
|
}
|
|
}
|
|
}
|
|
ZVAL_COPY_VALUE(Z_REFVAL_P(variable_ptr), value);
|
|
zval_ptr_dtor(&garbage);
|
|
} else {
|
|
zval garbage;
|
|
|
|
ZVAL_COPY_VALUE(&garbage, variable_ptr);
|
|
|
|
/* if we assign referenced variable, we should separate it */
|
|
ZVAL_COPY_VALUE(variable_ptr, value);
|
|
if (Z_REFCOUNTED_P(variable_ptr)) {
|
|
Z_ADDREF_P(variable_ptr);
|
|
if (Z_ISREF_P(variable_ptr)) {
|
|
SEPARATE_ZVAL(variable_ptr);
|
|
}
|
|
}
|
|
zval_ptr_dtor(&garbage);
|
|
}
|
|
}
|
|
goto exit;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* magic set */
|
|
if (zobj->ce->__set) {
|
|
zend_long *guard = zend_get_property_guard(zobj, property_info, member);
|
|
|
|
if (!((*guard) & IN_SET)) {
|
|
zval tmp_object;
|
|
|
|
ZVAL_COPY(&tmp_object, object);
|
|
(*guard) |= IN_SET; /* prevent circular setting */
|
|
if (zend_std_call_setter(&tmp_object, member, value TSRMLS_CC) != SUCCESS) {
|
|
/* for now, just ignore it - __set should take care of warnings, etc. */
|
|
}
|
|
(*guard) &= ~IN_SET;
|
|
zval_ptr_dtor(&tmp_object);
|
|
} else if (EXPECTED(property_info != NULL)) {
|
|
goto write_std_property;
|
|
} else {
|
|
if (Z_STRVAL_P(member)[0] == '\0') {
|
|
if (Z_STRLEN_P(member) == 0) {
|
|
zend_error(E_ERROR, "Cannot access empty property");
|
|
} else {
|
|
zend_error(E_ERROR, "Cannot access property started with '\\0'");
|
|
}
|
|
}
|
|
}
|
|
} else if (EXPECTED(property_info != NULL)) {
|
|
zval tmp;
|
|
|
|
write_std_property:
|
|
if (Z_REFCOUNTED_P(value)) {
|
|
if (Z_ISREF_P(value)) {
|
|
/* if we assign referenced variable, we should separate it */
|
|
ZVAL_DUP(&tmp, Z_REFVAL_P(value));
|
|
value = &tmp;
|
|
} else {
|
|
Z_ADDREF_P(value);
|
|
}
|
|
}
|
|
if (EXPECTED((property_info->flags & ZEND_ACC_STATIC) == 0) &&
|
|
property_info->offset >= 0) {
|
|
|
|
ZVAL_COPY_VALUE(&zobj->properties_table[property_info->offset], value);
|
|
} else {
|
|
if (!zobj->properties) {
|
|
rebuild_object_properties(zobj);
|
|
}
|
|
zend_hash_update(zobj->properties, property_info->name, value);
|
|
}
|
|
}
|
|
|
|
exit:
|
|
if (UNEXPECTED(Z_TYPE(tmp_member) != IS_UNDEF)) {
|
|
zval_ptr_dtor(&tmp_member);
|
|
}
|
|
}
|
|
/* }}} */
|
|
|
|
zval *zend_std_read_dimension(zval *object, zval *offset, int type, zval *rv TSRMLS_DC) /* {{{ */
|
|
{
|
|
zend_class_entry *ce = Z_OBJCE_P(object);
|
|
zval tmp;
|
|
|
|
if (EXPECTED(instanceof_function_ex(ce, zend_ce_arrayaccess, 1 TSRMLS_CC) != 0)) {
|
|
if(offset == NULL) {
|
|
/* [] construct */
|
|
ZVAL_UNDEF(&tmp);
|
|
offset = &tmp;
|
|
} else {
|
|
SEPARATE_ARG_IF_REF(offset);
|
|
}
|
|
zend_call_method_with_1_params(object, ce, NULL, "offsetget", rv, offset);
|
|
|
|
zval_ptr_dtor(offset);
|
|
|
|
if (UNEXPECTED(Z_TYPE_P(rv) == IS_UNDEF)) {
|
|
if (UNEXPECTED(!EG(exception))) {
|
|
zend_error_noreturn(E_ERROR, "Undefined offset for object of type %s used as array", ce->name->val);
|
|
}
|
|
return NULL;
|
|
}
|
|
return rv;
|
|
} else {
|
|
zend_error_noreturn(E_ERROR, "Cannot use object of type %s as array", ce->name->val);
|
|
return NULL;
|
|
}
|
|
}
|
|
/* }}} */
|
|
|
|
static void zend_std_write_dimension(zval *object, zval *offset, zval *value TSRMLS_DC) /* {{{ */
|
|
{
|
|
zend_class_entry *ce = Z_OBJCE_P(object);
|
|
zval tmp;
|
|
|
|
if (EXPECTED(instanceof_function_ex(ce, zend_ce_arrayaccess, 1 TSRMLS_CC) != 0)) {
|
|
if (!offset) {
|
|
ZVAL_NULL(&tmp);
|
|
offset = &tmp;
|
|
} else {
|
|
SEPARATE_ARG_IF_REF(offset);
|
|
}
|
|
zend_call_method_with_2_params(object, ce, NULL, "offsetset", NULL, offset, value);
|
|
zval_ptr_dtor(offset);
|
|
} else {
|
|
zend_error_noreturn(E_ERROR, "Cannot use object of type %s as array", ce->name->val);
|
|
}
|
|
}
|
|
/* }}} */
|
|
|
|
static int zend_std_has_dimension(zval *object, zval *offset, int check_empty TSRMLS_DC) /* {{{ */
|
|
{
|
|
zend_class_entry *ce = Z_OBJCE_P(object);
|
|
zval retval;
|
|
int result;
|
|
|
|
if (EXPECTED(instanceof_function_ex(ce, zend_ce_arrayaccess, 1 TSRMLS_CC) != 0)) {
|
|
SEPARATE_ARG_IF_REF(offset);
|
|
zend_call_method_with_1_params(object, ce, NULL, "offsetexists", &retval, offset);
|
|
if (EXPECTED(Z_TYPE(retval) != IS_UNDEF)) {
|
|
result = i_zend_is_true(&retval TSRMLS_CC);
|
|
zval_ptr_dtor(&retval);
|
|
if (check_empty && result && EXPECTED(!EG(exception))) {
|
|
zend_call_method_with_1_params(object, ce, NULL, "offsetget", &retval, offset);
|
|
if (EXPECTED(Z_TYPE(retval) != IS_UNDEF)) {
|
|
result = i_zend_is_true(&retval TSRMLS_CC);
|
|
zval_ptr_dtor(&retval);
|
|
}
|
|
}
|
|
} else {
|
|
result = 0;
|
|
}
|
|
zval_ptr_dtor(offset);
|
|
} else {
|
|
zend_error_noreturn(E_ERROR, "Cannot use object of type %s as array", ce->name->val);
|
|
return 0;
|
|
}
|
|
return result;
|
|
}
|
|
/* }}} */
|
|
|
|
static zval *zend_std_get_property_ptr_ptr(zval *object, zval *member, int type, void **cache_slot TSRMLS_DC) /* {{{ */
|
|
{
|
|
zend_object *zobj;
|
|
zval tmp_member;
|
|
zval *retval, tmp;
|
|
zend_property_info *property_info;
|
|
zend_long *guard;
|
|
|
|
zobj = Z_OBJ_P(object);
|
|
|
|
ZVAL_UNDEF(&tmp_member);
|
|
if (UNEXPECTED(Z_TYPE_P(member) != IS_STRING)) {
|
|
ZVAL_STR(&tmp_member, zval_get_string(member));
|
|
member = &tmp_member;
|
|
cache_slot = NULL;
|
|
}
|
|
|
|
#if DEBUG_OBJECT_HANDLERS
|
|
fprintf(stderr, "Ptr object #%d property: %s\n", Z_OBJ_HANDLE_P(object), Z_STRVAL_P(member));
|
|
#endif
|
|
|
|
property_info = zend_get_property_info_quick(zobj->ce, Z_STR_P(member), (zobj->ce->__get != NULL), cache_slot TSRMLS_CC);
|
|
|
|
if (EXPECTED(property_info != NULL)) {
|
|
if (EXPECTED((property_info->flags & ZEND_ACC_STATIC) == 0) &&
|
|
property_info->offset >= 0) {
|
|
retval = &zobj->properties_table[property_info->offset];
|
|
if (Z_TYPE_P(retval) != IS_UNDEF) {
|
|
goto exit;
|
|
}
|
|
} else if (UNEXPECTED(zobj->properties != NULL)) {
|
|
retval = zend_hash_find(zobj->properties, property_info->name);
|
|
if (retval) goto exit;
|
|
}
|
|
}
|
|
|
|
if (!zobj->ce->__get ||
|
|
(guard = zend_get_property_guard(zobj, property_info, member)) == NULL ||
|
|
(property_info && ((*guard) & IN_GET))) {
|
|
|
|
ZVAL_NULL(&tmp);
|
|
if (EXPECTED((property_info->flags & ZEND_ACC_STATIC) == 0) &&
|
|
property_info->offset >= 0) {
|
|
retval = &zobj->properties_table[property_info->offset];
|
|
ZVAL_NULL(retval);
|
|
} else {
|
|
if (!zobj->properties) {
|
|
rebuild_object_properties(zobj);
|
|
}
|
|
retval = zend_hash_update(zobj->properties, property_info->name, &tmp);
|
|
}
|
|
|
|
/* Notice is thrown after creation of the property, to avoid EG(std_property_info)
|
|
* being overwritten in an error handler. */
|
|
if (UNEXPECTED(type == BP_VAR_RW || type == BP_VAR_R)) {
|
|
zend_error(E_NOTICE, "Undefined property: %s::$%s", zobj->ce->name->val, Z_STRVAL_P(member));
|
|
}
|
|
} else {
|
|
/* we do have getter - fail and let it try again with usual get/set */
|
|
retval = NULL;
|
|
}
|
|
|
|
exit:
|
|
if (UNEXPECTED(Z_TYPE(tmp_member) != IS_UNDEF)) {
|
|
zval_dtor(&tmp_member);
|
|
}
|
|
return retval;
|
|
}
|
|
/* }}} */
|
|
|
|
static void zend_std_unset_property(zval *object, zval *member, void **cache_slot TSRMLS_DC) /* {{{ */
|
|
{
|
|
zend_object *zobj;
|
|
zval tmp_member;
|
|
zend_property_info *property_info;
|
|
|
|
zobj = Z_OBJ_P(object);
|
|
|
|
ZVAL_UNDEF(&tmp_member);
|
|
if (UNEXPECTED(Z_TYPE_P(member) != IS_STRING)) {
|
|
ZVAL_STR(&tmp_member, zval_get_string(member));
|
|
member = &tmp_member;
|
|
cache_slot = NULL;
|
|
}
|
|
|
|
property_info = zend_get_property_info_quick(zobj->ce, Z_STR_P(member), (zobj->ce->__unset != NULL), cache_slot TSRMLS_CC);
|
|
|
|
if (EXPECTED(property_info != NULL)) {
|
|
if (EXPECTED((property_info->flags & ZEND_ACC_STATIC) == 0) &&
|
|
property_info->offset >= 0) {
|
|
if (Z_TYPE(zobj->properties_table[property_info->offset]) != IS_UNDEF) {
|
|
zval_ptr_dtor(&zobj->properties_table[property_info->offset]);
|
|
ZVAL_UNDEF(&zobj->properties_table[property_info->offset]);
|
|
goto exit;
|
|
}
|
|
} else if (zobj->properties &&
|
|
UNEXPECTED(zend_hash_del(zobj->properties, property_info->name) != FAILURE)) {
|
|
goto exit;
|
|
}
|
|
}
|
|
|
|
/* magic unset */
|
|
if (zobj->ce->__unset) {
|
|
zend_long *guard = zend_get_property_guard(zobj, property_info, member);
|
|
if (!((*guard) & IN_UNSET)) {
|
|
zval tmp_object;
|
|
|
|
/* have unseter - try with it! */
|
|
ZVAL_COPY(&tmp_object, object);
|
|
(*guard) |= IN_UNSET; /* prevent circular unsetting */
|
|
zend_std_call_unsetter(&tmp_object, member TSRMLS_CC);
|
|
(*guard) &= ~IN_UNSET;
|
|
zval_ptr_dtor(&tmp_object);
|
|
} else {
|
|
if (Z_STRVAL_P(member)[0] == '\0') {
|
|
if (Z_STRLEN_P(member) == 0) {
|
|
zend_error(E_ERROR, "Cannot access empty property");
|
|
} else {
|
|
zend_error(E_ERROR, "Cannot access property started with '\\0'");
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
exit:
|
|
if (UNEXPECTED(Z_TYPE(tmp_member) != IS_NULL)) {
|
|
zval_ptr_dtor(&tmp_member);
|
|
}
|
|
}
|
|
/* }}} */
|
|
|
|
static void zend_std_unset_dimension(zval *object, zval *offset TSRMLS_DC) /* {{{ */
|
|
{
|
|
zend_class_entry *ce = Z_OBJCE_P(object);
|
|
|
|
if (instanceof_function_ex(ce, zend_ce_arrayaccess, 1 TSRMLS_CC)) {
|
|
SEPARATE_ARG_IF_REF(offset);
|
|
zend_call_method_with_1_params(object, ce, NULL, "offsetunset", NULL, offset);
|
|
zval_ptr_dtor(offset);
|
|
} else {
|
|
zend_error_noreturn(E_ERROR, "Cannot use object of type %s as array", ce->name->val);
|
|
}
|
|
}
|
|
/* }}} */
|
|
|
|
ZEND_API void zend_std_call_user_call(INTERNAL_FUNCTION_PARAMETERS) /* {{{ */
|
|
{
|
|
zend_internal_function *func = (zend_internal_function *)EX(func);
|
|
zval method_name, method_args;
|
|
zval method_result;
|
|
zend_class_entry *ce = Z_OBJCE_P(getThis());
|
|
|
|
array_init_size(&method_args, ZEND_NUM_ARGS());
|
|
|
|
if (UNEXPECTED(zend_copy_parameters_array(ZEND_NUM_ARGS(), &method_args TSRMLS_CC) == FAILURE)) {
|
|
zval_dtor(&method_args);
|
|
zend_error_noreturn(E_ERROR, "Cannot get arguments for __call");
|
|
RETURN_FALSE;
|
|
}
|
|
|
|
ZVAL_STR(&method_name, func->function_name); /* no dup - it's a copy */
|
|
|
|
/* __call handler is called with two arguments:
|
|
method name
|
|
array of method parameters
|
|
|
|
*/
|
|
zend_call_method_with_2_params(getThis(), ce, &ce->__call, ZEND_CALL_FUNC_NAME, &method_result, &method_name, &method_args);
|
|
|
|
if (Z_TYPE(method_result) != IS_UNDEF) {
|
|
RETVAL_ZVAL_FAST(&method_result);
|
|
zval_ptr_dtor(&method_result);
|
|
}
|
|
|
|
/* now destruct all auxiliaries */
|
|
zval_ptr_dtor(&method_args);
|
|
zval_ptr_dtor(&method_name);
|
|
|
|
/* destruct the function also, then - we have allocated it in get_method */
|
|
efree_size(func, sizeof(zend_internal_function));
|
|
}
|
|
/* }}} */
|
|
|
|
/* Ensures that we're allowed to call a private method.
|
|
* Returns the function address that should be called, or NULL
|
|
* if no such function exists.
|
|
*/
|
|
static inline zend_function *zend_check_private_int(zend_function *fbc, zend_class_entry *ce, zend_string *function_name TSRMLS_DC) /* {{{ */
|
|
{
|
|
zval *func;
|
|
|
|
if (!ce) {
|
|
return 0;
|
|
}
|
|
|
|
/* We may call a private function if:
|
|
* 1. The class of our object is the same as the scope, and the private
|
|
* function (EX(fbc)) has the same scope.
|
|
* 2. One of our parent classes are the same as the scope, and it contains
|
|
* a private function with the same name that has the same scope.
|
|
*/
|
|
if (fbc->common.scope == ce && EG(scope) == ce) {
|
|
/* rule #1 checks out ok, allow the function call */
|
|
return fbc;
|
|
}
|
|
|
|
|
|
/* Check rule #2 */
|
|
ce = ce->parent;
|
|
while (ce) {
|
|
if (ce == EG(scope)) {
|
|
if ((func = zend_hash_find(&ce->function_table, function_name))) {
|
|
fbc = Z_FUNC_P(func);
|
|
if (fbc->common.fn_flags & ZEND_ACC_PRIVATE
|
|
&& fbc->common.scope == EG(scope)) {
|
|
return fbc;
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
ce = ce->parent;
|
|
}
|
|
return NULL;
|
|
}
|
|
/* }}} */
|
|
|
|
ZEND_API int zend_check_private(zend_function *fbc, zend_class_entry *ce, zend_string *function_name TSRMLS_DC) /* {{{ */
|
|
{
|
|
return zend_check_private_int(fbc, ce, function_name TSRMLS_CC) != NULL;
|
|
}
|
|
/* }}} */
|
|
|
|
/* Ensures that we're allowed to call a protected method.
|
|
*/
|
|
ZEND_API int zend_check_protected(zend_class_entry *ce, zend_class_entry *scope) /* {{{ */
|
|
{
|
|
zend_class_entry *fbc_scope = ce;
|
|
|
|
/* Is the context that's calling the function, the same as one of
|
|
* the function's parents?
|
|
*/
|
|
while (fbc_scope) {
|
|
if (fbc_scope==scope) {
|
|
return 1;
|
|
}
|
|
fbc_scope = fbc_scope->parent;
|
|
}
|
|
|
|
/* Is the function's scope the same as our current object context,
|
|
* or any of the parents of our context?
|
|
*/
|
|
while (scope) {
|
|
if (scope==ce) {
|
|
return 1;
|
|
}
|
|
scope = scope->parent;
|
|
}
|
|
return 0;
|
|
}
|
|
/* }}} */
|
|
|
|
static inline union _zend_function *zend_get_user_call_function(zend_class_entry *ce, zend_string *method_name) /* {{{ */
|
|
{
|
|
zend_internal_function *call_user_call = emalloc(sizeof(zend_internal_function));
|
|
call_user_call->type = ZEND_INTERNAL_FUNCTION;
|
|
call_user_call->module = (ce->type == ZEND_INTERNAL_CLASS) ? ce->info.internal.module : NULL;
|
|
call_user_call->handler = zend_std_call_user_call;
|
|
call_user_call->arg_info = NULL;
|
|
call_user_call->num_args = 0;
|
|
call_user_call->scope = ce;
|
|
call_user_call->fn_flags = ZEND_ACC_CALL_VIA_HANDLER;
|
|
//??? keep compatibility for "\0" characters
|
|
//??? see: Zend/tests/bug46238.phpt
|
|
if (UNEXPECTED(strlen(method_name->val) != method_name->len)) {
|
|
call_user_call->function_name = zend_string_init(method_name->val, strlen(method_name->val), 0);
|
|
} else {
|
|
call_user_call->function_name = zend_string_copy(method_name);
|
|
}
|
|
|
|
return (union _zend_function *)call_user_call;
|
|
}
|
|
/* }}} */
|
|
|
|
static union _zend_function *zend_std_get_method(zend_object **obj_ptr, zend_string *method_name, const zval *key TSRMLS_DC) /* {{{ */
|
|
{
|
|
zend_object *zobj = *obj_ptr;
|
|
zval *func;
|
|
zend_function *fbc;
|
|
zend_string *lc_method_name;
|
|
ALLOCA_FLAG(use_heap);
|
|
|
|
if (EXPECTED(key != NULL)) {
|
|
lc_method_name = Z_STR_P(key);
|
|
} else {
|
|
STR_ALLOCA_ALLOC(lc_method_name, method_name->len, use_heap);
|
|
zend_str_tolower_copy(lc_method_name->val, method_name->val, method_name->len);
|
|
}
|
|
|
|
if (UNEXPECTED((func = zend_hash_find(&zobj->ce->function_table, lc_method_name)) == NULL)) {
|
|
if (UNEXPECTED(!key)) {
|
|
STR_ALLOCA_FREE(lc_method_name, use_heap);
|
|
}
|
|
if (zobj->ce->__call) {
|
|
return zend_get_user_call_function(zobj->ce, method_name);
|
|
} else {
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
fbc = Z_FUNC_P(func);
|
|
/* Check access level */
|
|
if (fbc->op_array.fn_flags & ZEND_ACC_PRIVATE) {
|
|
zend_function *updated_fbc;
|
|
|
|
/* Ensure that if we're calling a private function, we're allowed to do so.
|
|
* If we're not and __call() handler exists, invoke it, otherwise error out.
|
|
*/
|
|
updated_fbc = zend_check_private_int(fbc, zobj->ce, lc_method_name TSRMLS_CC);
|
|
if (EXPECTED(updated_fbc != NULL)) {
|
|
fbc = updated_fbc;
|
|
} else {
|
|
if (zobj->ce->__call) {
|
|
fbc = zend_get_user_call_function(zobj->ce, method_name);
|
|
} else {
|
|
zend_error_noreturn(E_ERROR, "Call to %s method %s::%s() from context '%s'", zend_visibility_string(fbc->common.fn_flags), ZEND_FN_SCOPE_NAME(fbc), method_name->val, EG(scope) ? EG(scope)->name->val : "");
|
|
}
|
|
}
|
|
} else {
|
|
/* Ensure that we haven't overridden a private function and end up calling
|
|
* the overriding public function...
|
|
*/
|
|
if (EG(scope) &&
|
|
is_derived_class(fbc->common.scope, EG(scope)) &&
|
|
fbc->op_array.fn_flags & ZEND_ACC_CHANGED) {
|
|
if ((func = zend_hash_find(&EG(scope)->function_table, lc_method_name)) != NULL) {
|
|
zend_function *priv_fbc = Z_FUNC_P(func);
|
|
if (priv_fbc->common.fn_flags & ZEND_ACC_PRIVATE
|
|
&& priv_fbc->common.scope == EG(scope)) {
|
|
fbc = priv_fbc;
|
|
}
|
|
}
|
|
}
|
|
if ((fbc->common.fn_flags & ZEND_ACC_PROTECTED)) {
|
|
/* Ensure that if we're calling a protected function, we're allowed to do so.
|
|
* If we're not and __call() handler exists, invoke it, otherwise error out.
|
|
*/
|
|
if (UNEXPECTED(!zend_check_protected(zend_get_function_root_class(fbc), EG(scope)))) {
|
|
if (zobj->ce->__call) {
|
|
fbc = zend_get_user_call_function(zobj->ce, method_name);
|
|
} else {
|
|
zend_error_noreturn(E_ERROR, "Call to %s method %s::%s() from context '%s'", zend_visibility_string(fbc->common.fn_flags), ZEND_FN_SCOPE_NAME(fbc), method_name->val, EG(scope) ? EG(scope)->name->val : "");
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (UNEXPECTED(!key)) {
|
|
STR_ALLOCA_FREE(lc_method_name, use_heap);
|
|
}
|
|
return fbc;
|
|
}
|
|
/* }}} */
|
|
|
|
ZEND_API void zend_std_callstatic_user_call(INTERNAL_FUNCTION_PARAMETERS) /* {{{ */
|
|
{
|
|
zend_internal_function *func = (zend_internal_function *)EX(func);
|
|
zval method_name, method_args;
|
|
zval method_result;
|
|
zend_class_entry *ce = EG(scope);
|
|
|
|
array_init_size(&method_args, ZEND_NUM_ARGS());
|
|
|
|
if (UNEXPECTED(zend_copy_parameters_array(ZEND_NUM_ARGS(), &method_args TSRMLS_CC) == FAILURE)) {
|
|
zval_dtor(&method_args);
|
|
zend_error_noreturn(E_ERROR, "Cannot get arguments for " ZEND_CALLSTATIC_FUNC_NAME);
|
|
RETURN_FALSE;
|
|
}
|
|
|
|
ZVAL_STR(&method_name, func->function_name); /* no dup - it's a copy */
|
|
|
|
/* __callStatic handler is called with two arguments:
|
|
method name
|
|
array of method parameters
|
|
*/
|
|
zend_call_method_with_2_params(NULL, ce, &ce->__callstatic, ZEND_CALLSTATIC_FUNC_NAME, &method_result, &method_name, &method_args);
|
|
|
|
if (Z_TYPE(method_result) != IS_UNDEF) {
|
|
RETVAL_ZVAL_FAST(&method_result);
|
|
zval_ptr_dtor(&method_result);
|
|
}
|
|
|
|
/* now destruct all auxiliaries */
|
|
zval_ptr_dtor(&method_args);
|
|
zval_ptr_dtor(&method_name);
|
|
|
|
/* destruct the function also, then - we have allocated it in get_method */
|
|
efree_size(func, sizeof(zend_internal_function));
|
|
}
|
|
/* }}} */
|
|
|
|
static inline union _zend_function *zend_get_user_callstatic_function(zend_class_entry *ce, zend_string *method_name) /* {{{ */
|
|
{
|
|
zend_internal_function *callstatic_user_call = emalloc(sizeof(zend_internal_function));
|
|
callstatic_user_call->type = ZEND_INTERNAL_FUNCTION;
|
|
callstatic_user_call->module = (ce->type == ZEND_INTERNAL_CLASS) ? ce->info.internal.module : NULL;
|
|
callstatic_user_call->handler = zend_std_callstatic_user_call;
|
|
callstatic_user_call->arg_info = NULL;
|
|
callstatic_user_call->num_args = 0;
|
|
callstatic_user_call->scope = ce;
|
|
callstatic_user_call->fn_flags = ZEND_ACC_STATIC | ZEND_ACC_PUBLIC | ZEND_ACC_CALL_VIA_HANDLER;
|
|
//??? keep compatibility for "\0" characters
|
|
//??? see: Zend/tests/bug46238.phpt
|
|
if (UNEXPECTED(strlen(method_name->val) != method_name->len)) {
|
|
callstatic_user_call->function_name = zend_string_init(method_name->val, strlen(method_name->val), 0);
|
|
} else {
|
|
callstatic_user_call->function_name = zend_string_copy(method_name);
|
|
}
|
|
|
|
return (zend_function *)callstatic_user_call;
|
|
}
|
|
/* }}} */
|
|
|
|
/* This is not (yet?) in the API, but it belongs in the built-in objects callbacks */
|
|
|
|
ZEND_API zend_function *zend_std_get_static_method(zend_class_entry *ce, zend_string *function_name, const zval *key TSRMLS_DC) /* {{{ */
|
|
{
|
|
zend_function *fbc = NULL;
|
|
char *lc_class_name;
|
|
zend_string *lc_function_name;
|
|
|
|
if (EXPECTED(key != NULL)) {
|
|
lc_function_name = Z_STR_P(key);
|
|
} else {
|
|
lc_function_name = zend_string_alloc(function_name->len, 0);
|
|
zend_str_tolower_copy(lc_function_name->val, function_name->val, function_name->len);
|
|
}
|
|
|
|
if (function_name->len == ce->name->len && ce->constructor) {
|
|
lc_class_name = zend_str_tolower_dup(ce->name->val, ce->name->len);
|
|
/* Only change the method to the constructor if the constructor isn't called __construct
|
|
* we check for __ so we can be binary safe for lowering, we should use ZEND_CONSTRUCTOR_FUNC_NAME
|
|
*/
|
|
if (!memcmp(lc_class_name, lc_function_name->val, function_name->len) && memcmp(ce->constructor->common.function_name->val, "__", sizeof("__") - 1)) {
|
|
fbc = ce->constructor;
|
|
}
|
|
efree(lc_class_name);
|
|
}
|
|
|
|
if (EXPECTED(!fbc)) {
|
|
zval *func = zend_hash_find(&ce->function_table, lc_function_name);
|
|
if (EXPECTED(func != NULL)) {
|
|
fbc = Z_FUNC_P(func);
|
|
} else {
|
|
if (UNEXPECTED(!key)) {
|
|
zend_string_free(lc_function_name);
|
|
}
|
|
if (ce->__call &&
|
|
Z_OBJ(EG(current_execute_data)->This) &&
|
|
instanceof_function(Z_OBJCE(EG(current_execute_data)->This), ce TSRMLS_CC)) {
|
|
return zend_get_user_call_function(ce, function_name);
|
|
} else if (ce->__callstatic) {
|
|
return zend_get_user_callstatic_function(ce, function_name);
|
|
} else {
|
|
return NULL;
|
|
}
|
|
}
|
|
}
|
|
|
|
#if MBO_0
|
|
/* right now this function is used for non static method lookup too */
|
|
/* Is the function static */
|
|
if (UNEXPECTED(!(fbc->common.fn_flags & ZEND_ACC_STATIC))) {
|
|
zend_error_noreturn(E_ERROR, "Cannot call non static method %s::%s() without object", ZEND_FN_SCOPE_NAME(fbc), fbc->common.function_name->val);
|
|
}
|
|
#endif
|
|
if (fbc->op_array.fn_flags & ZEND_ACC_PUBLIC) {
|
|
/* No further checks necessary, most common case */
|
|
} else if (fbc->op_array.fn_flags & ZEND_ACC_PRIVATE) {
|
|
zend_function *updated_fbc;
|
|
|
|
/* Ensure that if we're calling a private function, we're allowed to do so.
|
|
*/
|
|
updated_fbc = zend_check_private_int(fbc, EG(scope), lc_function_name TSRMLS_CC);
|
|
if (EXPECTED(updated_fbc != NULL)) {
|
|
fbc = updated_fbc;
|
|
} else {
|
|
if (ce->__callstatic) {
|
|
fbc = zend_get_user_callstatic_function(ce, function_name);
|
|
} else {
|
|
zend_error_noreturn(E_ERROR, "Call to %s method %s::%s() from context '%s'", zend_visibility_string(fbc->common.fn_flags), ZEND_FN_SCOPE_NAME(fbc), function_name->val, EG(scope) ? EG(scope)->name->val : "");
|
|
}
|
|
}
|
|
} else if ((fbc->common.fn_flags & ZEND_ACC_PROTECTED)) {
|
|
/* Ensure that if we're calling a protected function, we're allowed to do so.
|
|
*/
|
|
if (UNEXPECTED(!zend_check_protected(zend_get_function_root_class(fbc), EG(scope)))) {
|
|
if (ce->__callstatic) {
|
|
fbc = zend_get_user_callstatic_function(ce, function_name);
|
|
} else {
|
|
zend_error_noreturn(E_ERROR, "Call to %s method %s::%s() from context '%s'", zend_visibility_string(fbc->common.fn_flags), ZEND_FN_SCOPE_NAME(fbc), function_name->val, EG(scope) ? EG(scope)->name->val : "");
|
|
}
|
|
}
|
|
}
|
|
|
|
if (UNEXPECTED(!key)) {
|
|
zend_string_free(lc_function_name);
|
|
}
|
|
|
|
return fbc;
|
|
}
|
|
/* }}} */
|
|
|
|
ZEND_API zval *zend_std_get_static_property(zend_class_entry *ce, zend_string *property_name, zend_bool silent, void **cache_slot TSRMLS_DC) /* {{{ */
|
|
{
|
|
zend_property_info *property_info;
|
|
|
|
if (UNEXPECTED(cache_slot == NULL) ||
|
|
(property_info = CACHED_POLYMORPHIC_PTR_EX(cache_slot, ce)) == NULL) {
|
|
|
|
if (UNEXPECTED((property_info = zend_hash_find_ptr(&ce->properties_info, property_name)) == NULL)) {
|
|
if (!silent) {
|
|
zend_error_noreturn(E_ERROR, "Access to undeclared static property: %s::$%s", ce->name->val, property_name->val);
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
if (UNEXPECTED(!zend_verify_property_access(property_info, ce TSRMLS_CC))) {
|
|
if (!silent) {
|
|
zend_error_noreturn(E_ERROR, "Cannot access %s property %s::$%s", zend_visibility_string(property_info->flags), ce->name->val, property_name->val);
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
if (UNEXPECTED((property_info->flags & ZEND_ACC_STATIC) == 0)) {
|
|
if (!silent) {
|
|
zend_error_noreturn(E_ERROR, "Access to undeclared static property: %s::$%s", ce->name->val, property_name->val);
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
zend_update_class_constants(ce TSRMLS_CC);
|
|
|
|
if (EXPECTED(cache_slot != NULL)) {
|
|
CACHE_POLYMORPHIC_PTR_EX(cache_slot, ce, property_info);
|
|
}
|
|
}
|
|
|
|
if (UNEXPECTED(CE_STATIC_MEMBERS(ce) == NULL) ||
|
|
UNEXPECTED(Z_TYPE(CE_STATIC_MEMBERS(ce)[property_info->offset]) == IS_UNDEF)) {
|
|
if (!silent) {
|
|
zend_error_noreturn(E_ERROR, "Access to undeclared static property: %s::$%s", ce->name->val, property_name->val);
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
return &CE_STATIC_MEMBERS(ce)[property_info->offset];
|
|
}
|
|
/* }}} */
|
|
|
|
ZEND_API zend_bool zend_std_unset_static_property(zend_class_entry *ce, zend_string *property_name, void **cache_slot TSRMLS_DC) /* {{{ */
|
|
{
|
|
zend_error_noreturn(E_ERROR, "Attempt to unset static property %s::$%s", ce->name->val, property_name->val);
|
|
return 0;
|
|
}
|
|
/* }}} */
|
|
|
|
ZEND_API union _zend_function *zend_std_get_constructor(zend_object *zobj TSRMLS_DC) /* {{{ */
|
|
{
|
|
zend_function *constructor = zobj->ce->constructor;
|
|
|
|
if (constructor) {
|
|
if (constructor->op_array.fn_flags & ZEND_ACC_PUBLIC) {
|
|
/* No further checks necessary */
|
|
} else if (constructor->op_array.fn_flags & ZEND_ACC_PRIVATE) {
|
|
/* Ensure that if we're calling a private function, we're allowed to do so.
|
|
*/
|
|
if (UNEXPECTED(constructor->common.scope != EG(scope))) {
|
|
if (EG(scope)) {
|
|
zend_error_noreturn(E_ERROR, "Call to private %s::%s() from context '%s'", constructor->common.scope->name->val, constructor->common.function_name->val, EG(scope)->name->val);
|
|
} else {
|
|
zend_error_noreturn(E_ERROR, "Call to private %s::%s() from invalid context", constructor->common.scope->name->val, constructor->common.function_name->val);
|
|
}
|
|
}
|
|
} else if ((constructor->common.fn_flags & ZEND_ACC_PROTECTED)) {
|
|
/* Ensure that if we're calling a protected function, we're allowed to do so.
|
|
* Constructors only have prototype if they are defined by an interface but
|
|
* it is the compilers responsibility to take care of the prototype.
|
|
*/
|
|
if (UNEXPECTED(!zend_check_protected(zend_get_function_root_class(constructor), EG(scope)))) {
|
|
if (EG(scope)) {
|
|
zend_error_noreturn(E_ERROR, "Call to protected %s::%s() from context '%s'", constructor->common.scope->name->val, constructor->common.function_name->val, EG(scope)->name->val);
|
|
} else {
|
|
zend_error_noreturn(E_ERROR, "Call to protected %s::%s() from invalid context", constructor->common.scope->name->val, constructor->common.function_name->val);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
return constructor;
|
|
}
|
|
/* }}} */
|
|
|
|
int zend_compare_symbol_tables_i(HashTable *ht1, HashTable *ht2 TSRMLS_DC);
|
|
|
|
static int zend_std_compare_objects(zval *o1, zval *o2 TSRMLS_DC) /* {{{ */
|
|
{
|
|
zend_object *zobj1, *zobj2;
|
|
|
|
zobj1 = Z_OBJ_P(o1);
|
|
zobj2 = Z_OBJ_P(o2);
|
|
|
|
if (zobj1->ce != zobj2->ce) {
|
|
return 1; /* different classes */
|
|
}
|
|
if (!zobj1->properties && !zobj2->properties) {
|
|
int i;
|
|
|
|
Z_OBJ_PROTECT_RECURSION(o1);
|
|
Z_OBJ_PROTECT_RECURSION(o2);
|
|
for (i = 0; i < zobj1->ce->default_properties_count; i++) {
|
|
if (Z_TYPE(zobj1->properties_table[i]) != IS_UNDEF) {
|
|
if (Z_TYPE(zobj2->properties_table[i]) != IS_UNDEF) {
|
|
zval result;
|
|
zval *p1 = &zobj1->properties_table[i];
|
|
zval *p2 = &zobj2->properties_table[i];
|
|
|
|
if (compare_function(&result, p1, p2 TSRMLS_CC)==FAILURE) {
|
|
Z_OBJ_UNPROTECT_RECURSION(o1);
|
|
Z_OBJ_UNPROTECT_RECURSION(o2);
|
|
return 1;
|
|
}
|
|
if (Z_LVAL(result) != 0) {
|
|
Z_OBJ_UNPROTECT_RECURSION(o1);
|
|
Z_OBJ_UNPROTECT_RECURSION(o2);
|
|
return Z_LVAL(result);
|
|
}
|
|
} else {
|
|
Z_OBJ_UNPROTECT_RECURSION(o1);
|
|
Z_OBJ_UNPROTECT_RECURSION(o2);
|
|
return 1;
|
|
}
|
|
} else {
|
|
if (Z_TYPE(zobj2->properties_table[i]) != IS_UNDEF) {
|
|
Z_OBJ_UNPROTECT_RECURSION(o1);
|
|
Z_OBJ_UNPROTECT_RECURSION(o2);
|
|
return 1;
|
|
}
|
|
}
|
|
}
|
|
Z_OBJ_UNPROTECT_RECURSION(o1);
|
|
Z_OBJ_UNPROTECT_RECURSION(o2);
|
|
return 0;
|
|
} else {
|
|
if (!zobj1->properties) {
|
|
rebuild_object_properties(zobj1);
|
|
}
|
|
if (!zobj2->properties) {
|
|
rebuild_object_properties(zobj2);
|
|
}
|
|
return zend_compare_symbol_tables_i(zobj1->properties, zobj2->properties TSRMLS_CC);
|
|
}
|
|
}
|
|
/* }}} */
|
|
|
|
static int zend_std_has_property(zval *object, zval *member, int has_set_exists, void **cache_slot TSRMLS_DC) /* {{{ */
|
|
{
|
|
zend_object *zobj;
|
|
int result;
|
|
zval *value = NULL;
|
|
zval tmp_member;
|
|
zend_property_info *property_info;
|
|
|
|
zobj = Z_OBJ_P(object);
|
|
|
|
ZVAL_UNDEF(&tmp_member);
|
|
if (UNEXPECTED(Z_TYPE_P(member) != IS_STRING)) {
|
|
ZVAL_STR(&tmp_member, zval_get_string(member));
|
|
member = &tmp_member;
|
|
cache_slot = NULL;
|
|
}
|
|
|
|
property_info = zend_get_property_info_quick(zobj->ce, Z_STR_P(member), 1, cache_slot TSRMLS_CC);
|
|
|
|
if (EXPECTED(property_info != NULL)) {
|
|
if (EXPECTED((property_info->flags & ZEND_ACC_STATIC) == 0) &&
|
|
property_info->offset >= 0) {
|
|
value = &zobj->properties_table[property_info->offset];
|
|
if (Z_TYPE_P(value) != IS_UNDEF) {
|
|
goto found;
|
|
}
|
|
} else if (UNEXPECTED(zobj->properties != NULL) &&
|
|
(value = zend_hash_find(zobj->properties, property_info->name)) != NULL) {
|
|
found:
|
|
switch (has_set_exists) {
|
|
case 0:
|
|
ZVAL_DEREF(value);
|
|
result = (Z_TYPE_P(value) != IS_NULL);
|
|
break;
|
|
default:
|
|
result = zend_is_true(value TSRMLS_CC);
|
|
break;
|
|
case 2:
|
|
result = 1;
|
|
break;
|
|
}
|
|
goto exit;
|
|
}
|
|
}
|
|
|
|
result = 0;
|
|
if ((has_set_exists != 2) && zobj->ce->__isset) {
|
|
zend_long *guard = zend_get_property_guard(zobj, property_info, member);
|
|
|
|
if (!((*guard) & IN_ISSET)) {
|
|
zval rv;
|
|
zval tmp_object;
|
|
|
|
/* have issetter - try with it! */
|
|
ZVAL_COPY(&tmp_object, object);
|
|
(*guard) |= IN_ISSET; /* prevent circular getting */
|
|
zend_std_call_issetter(&tmp_object, member, &rv TSRMLS_CC);
|
|
if (Z_TYPE(rv) != IS_UNDEF) {
|
|
result = zend_is_true(&rv TSRMLS_CC);
|
|
zval_ptr_dtor(&rv);
|
|
if (has_set_exists && result) {
|
|
if (EXPECTED(!EG(exception)) && zobj->ce->__get && !((*guard) & IN_GET)) {
|
|
(*guard) |= IN_GET;
|
|
zend_std_call_getter(&tmp_object, member, &rv TSRMLS_CC);
|
|
(*guard) &= ~IN_GET;
|
|
if (Z_TYPE(rv) != IS_UNDEF) {
|
|
result = i_zend_is_true(&rv TSRMLS_CC);
|
|
zval_ptr_dtor(&rv);
|
|
} else {
|
|
result = 0;
|
|
}
|
|
} else {
|
|
result = 0;
|
|
}
|
|
}
|
|
}
|
|
(*guard) &= ~IN_ISSET;
|
|
zval_ptr_dtor(&tmp_object);
|
|
}
|
|
}
|
|
|
|
exit:
|
|
if (UNEXPECTED(Z_TYPE(tmp_member) != IS_UNDEF)) {
|
|
zval_ptr_dtor(&tmp_member);
|
|
}
|
|
return result;
|
|
}
|
|
/* }}} */
|
|
|
|
zend_string *zend_std_object_get_class_name(const zend_object *zobj TSRMLS_DC) /* {{{ */
|
|
{
|
|
return zend_string_copy(zobj->ce->name);
|
|
}
|
|
/* }}} */
|
|
|
|
ZEND_API int zend_std_cast_object_tostring(zval *readobj, zval *writeobj, int type TSRMLS_DC) /* {{{ */
|
|
{
|
|
zval retval;
|
|
zend_class_entry *ce;
|
|
|
|
switch (type) {
|
|
case IS_STRING:
|
|
ce = Z_OBJCE_P(readobj);
|
|
if (ce->__tostring &&
|
|
(zend_call_method_with_0_params(readobj, ce, &ce->__tostring, "__tostring", &retval) || EG(exception))) {
|
|
if (UNEXPECTED(EG(exception) != NULL)) {
|
|
zval_ptr_dtor(&retval);
|
|
EG(exception) = NULL;
|
|
zend_error_noreturn(E_ERROR, "Method %s::__toString() must not throw an exception", ce->name->val);
|
|
return FAILURE;
|
|
}
|
|
if (EXPECTED(Z_TYPE(retval) == IS_STRING)) {
|
|
if (readobj == writeobj) {
|
|
zval_ptr_dtor(readobj);
|
|
}
|
|
ZVAL_COPY_VALUE(writeobj, &retval);
|
|
return SUCCESS;
|
|
} else {
|
|
zval_ptr_dtor(&retval);
|
|
if (readobj == writeobj) {
|
|
zval_ptr_dtor(readobj);
|
|
}
|
|
ZVAL_EMPTY_STRING(writeobj);
|
|
zend_error(E_RECOVERABLE_ERROR, "Method %s::__toString() must return a string value", ce->name->val);
|
|
return SUCCESS;
|
|
}
|
|
}
|
|
return FAILURE;
|
|
case _IS_BOOL:
|
|
ZVAL_BOOL(writeobj, 1);
|
|
return SUCCESS;
|
|
case IS_LONG:
|
|
ce = Z_OBJCE_P(readobj);
|
|
zend_error(E_NOTICE, "Object of class %s could not be converted to int", ce->name->val);
|
|
if (readobj == writeobj) {
|
|
zval_dtor(readobj);
|
|
}
|
|
ZVAL_LONG(writeobj, 1);
|
|
return SUCCESS;
|
|
case IS_DOUBLE:
|
|
ce = Z_OBJCE_P(readobj);
|
|
zend_error(E_NOTICE, "Object of class %s could not be converted to double", ce->name->val);
|
|
if (readobj == writeobj) {
|
|
zval_dtor(readobj);
|
|
}
|
|
ZVAL_DOUBLE(writeobj, 1);
|
|
return SUCCESS;
|
|
default:
|
|
ZVAL_NULL(writeobj);
|
|
break;
|
|
}
|
|
return FAILURE;
|
|
}
|
|
/* }}} */
|
|
|
|
int zend_std_get_closure(zval *obj, zend_class_entry **ce_ptr, zend_function **fptr_ptr, zend_object **obj_ptr TSRMLS_DC) /* {{{ */
|
|
{
|
|
zval *func;
|
|
zend_class_entry *ce;
|
|
|
|
if (Z_TYPE_P(obj) != IS_OBJECT) {
|
|
return FAILURE;
|
|
}
|
|
|
|
ce = Z_OBJCE_P(obj);
|
|
|
|
if ((func = zend_hash_str_find(&ce->function_table, ZEND_INVOKE_FUNC_NAME, sizeof(ZEND_INVOKE_FUNC_NAME)-1)) == NULL) {
|
|
return FAILURE;
|
|
}
|
|
*fptr_ptr = Z_FUNC_P(func);
|
|
|
|
*ce_ptr = ce;
|
|
if ((*fptr_ptr)->common.fn_flags & ZEND_ACC_STATIC) {
|
|
if (obj_ptr) {
|
|
*obj_ptr = NULL;
|
|
}
|
|
} else {
|
|
if (obj_ptr) {
|
|
*obj_ptr = Z_OBJ_P(obj);
|
|
}
|
|
}
|
|
return SUCCESS;
|
|
}
|
|
/* }}} */
|
|
|
|
ZEND_API zend_object_handlers std_object_handlers = {
|
|
0, /* offset */
|
|
|
|
zend_object_std_dtor, /* free_obj */
|
|
zend_objects_destroy_object, /* dtor_obj */
|
|
zend_objects_clone_obj, /* clone_obj */
|
|
|
|
zend_std_read_property, /* read_property */
|
|
zend_std_write_property, /* write_property */
|
|
zend_std_read_dimension, /* read_dimension */
|
|
zend_std_write_dimension, /* write_dimension */
|
|
zend_std_get_property_ptr_ptr, /* get_property_ptr_ptr */
|
|
NULL, /* get */
|
|
NULL, /* set */
|
|
zend_std_has_property, /* has_property */
|
|
zend_std_unset_property, /* unset_property */
|
|
zend_std_has_dimension, /* has_dimension */
|
|
zend_std_unset_dimension, /* unset_dimension */
|
|
zend_std_get_properties, /* get_properties */
|
|
zend_std_get_method, /* get_method */
|
|
NULL, /* call_method */
|
|
zend_std_get_constructor, /* get_constructor */
|
|
zend_std_object_get_class_name, /* get_class_name */
|
|
zend_std_compare_objects, /* compare_objects */
|
|
zend_std_cast_object_tostring, /* cast_object */
|
|
NULL, /* count_elements */
|
|
zend_std_get_debug_info, /* get_debug_info */
|
|
zend_std_get_closure, /* get_closure */
|
|
zend_std_get_gc, /* get_gc */
|
|
NULL, /* do_operation */
|
|
NULL, /* compare */
|
|
};
|
|
|
|
/*
|
|
* Local variables:
|
|
* tab-width: 4
|
|
* c-basic-offset: 4
|
|
* indent-tabs-mode: t
|
|
* End:
|
|
*/
|