mirror of
https://github.com/php/php-src.git
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1662 lines
54 KiB
C
1662 lines
54 KiB
C
/*
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+----------------------------------------------------------------------+
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| Zend Engine |
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+----------------------------------------------------------------------+
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| Copyright (c) 1998-2015 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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#define DEBUG_OBJECT_HANDLERS 0
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#define Z_OBJ_P(zval_p) \
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((zend_object*)(EG(objects_store).object_buckets[Z_OBJ_HANDLE_P(zval_p)].bucket.obj.object))
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#define Z_OBJ_PROTECT_RECURSION(zval_p) \
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do { \
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if (EG(objects_store).object_buckets[Z_OBJ_HANDLE_P(zval_p)].apply_count++ >= 3) { \
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zend_error(E_ERROR, "Nesting level too deep - recursive dependency?"); \
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} \
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} while (0)
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#define Z_OBJ_UNPROTECT_RECURSION(zval_p) \
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EG(objects_store).object_buckets[Z_OBJ_HANDLE_P(zval_p)].apply_count--
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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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HashPosition pos;
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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, 0, NULL, ZVAL_PTR_DTOR, 0);
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if (ce->default_properties_count) {
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for (zend_hash_internal_pointer_reset_ex(&ce->properties_info, &pos);
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zend_hash_get_current_data_ex(&ce->properties_info, (void**)&prop_info, &pos) == SUCCESS;
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zend_hash_move_forward_ex(&ce->properties_info, &pos)) {
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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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zobj->properties_table[prop_info->offset]) {
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zend_hash_quick_add(zobj->properties, prop_info->name, prop_info->name_length+1, prop_info->h, (void**)&zobj->properties_table[prop_info->offset], sizeof(zval*), (void**)&zobj->properties_table[prop_info->offset]);
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}
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}
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while (ce->parent && ce->parent->default_properties_count) {
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ce = ce->parent;
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for (zend_hash_internal_pointer_reset_ex(&ce->properties_info, &pos);
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zend_hash_get_current_data_ex(&ce->properties_info, (void**)&prop_info, &pos) == SUCCESS;
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zend_hash_move_forward_ex(&ce->properties_info, &pos)) {
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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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zobj->properties_table[prop_info->offset]) {
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zend_hash_quick_add(zobj->properties, prop_info->name, prop_info->name_length+1, prop_info->h, (void**)&zobj->properties_table[prop_info->offset], sizeof(zval*), (void**)&zobj->properties_table[prop_info->offset]);
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}
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}
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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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if (zobj->properties) {
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*table = NULL;
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*n = 0;
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return zobj->properties;
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} else {
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*table = zobj->properties_table;
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*n = zobj->ce->default_properties_count;
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return NULL;
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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_debug_info(zval *object, int *is_temp TSRMLS_DC) /* {{{ */
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{
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*is_temp = 0;
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return zend_std_get_properties(object TSRMLS_CC);
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}
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/* }}} */
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static zval *zend_std_call_getter(zval *object, zval *member TSRMLS_DC) /* {{{ */
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{
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zval *retval = NULL;
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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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SEPARATE_ARG_IF_REF(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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if (retval) {
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Z_DELREF_P(retval);
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}
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return retval;
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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 = NULL;
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int result;
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zend_class_entry *ce = Z_OBJCE_P(object);
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SEPARATE_ARG_IF_REF(member);
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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 (retval) {
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result = i_zend_is_true(retval) ? 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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SEPARATE_ARG_IF_REF(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 zval *zend_std_call_issetter(zval *object, zval *member TSRMLS_DC) /* {{{ */
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{
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zval *retval = NULL;
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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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SEPARATE_ARG_IF_REF(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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return retval;
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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, zval *member, int silent, const zend_literal *key 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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ulong h;
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if (key && (property_info = CACHED_POLYMORPHIC_PTR(key->cache_slot, ce)) != NULL) {
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return property_info;
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}
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if (UNEXPECTED(Z_STRVAL_P(member)[0] == '\0')) {
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if (!silent) {
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if (Z_STRLEN_P(member) == 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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h = key ? key->hash_value : zend_get_hash_value(Z_STRVAL_P(member), Z_STRLEN_P(member) + 1);
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if (zend_hash_quick_find(&ce->properties_info, Z_STRVAL_P(member), Z_STRLEN_P(member)+1, h, (void **) &property_info)==SUCCESS) {
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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, Z_STRVAL_P(member));
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}
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if (key) {
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CACHE_POLYMORPHIC_PTR(key->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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&& zend_hash_quick_find(&EG(scope)->properties_info, Z_STRVAL_P(member), Z_STRLEN_P(member)+1, h, (void **) &scope_property_info)==SUCCESS
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&& scope_property_info->flags & ZEND_ACC_PRIVATE) {
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if (key) {
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CACHE_POLYMORPHIC_PTR(key->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, Z_STRVAL_P(member));
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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 (key) {
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CACHE_POLYMORPHIC_PTR(key->cache_slot, ce, property_info);
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}
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}
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} else {
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EG(std_property_info).flags = ZEND_ACC_PUBLIC;
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EG(std_property_info).name = Z_STRVAL_P(member);
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EG(std_property_info).name_length = Z_STRLEN_P(member);
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EG(std_property_info).h = h;
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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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/* }}} */
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ZEND_API struct _zend_property_info *zend_get_property_info(zend_class_entry *ce, zval *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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}
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/* }}} */
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ZEND_API int zend_check_property_access(zend_object *zobj, const char *prop_info_name, int prop_info_name_len TSRMLS_DC) /* {{{ */
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{
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zend_property_info *property_info;
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const char *class_name, *prop_name;
|
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zval member;
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int prop_name_len;
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zend_unmangle_property_name_ex(prop_info_name, prop_info_name_len, &class_name, &prop_name, &prop_name_len);
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ZVAL_STRINGL(&member, prop_name, prop_name_len, 0);
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property_info = zend_get_property_info_quick(zobj->ce, &member, 1, NULL TSRMLS_CC);
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if (!property_info) {
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return FAILURE;
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}
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if (class_name && class_name[0] != '*') {
|
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if (!(property_info->flags & ZEND_ACC_PRIVATE)) {
|
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/* we we're looking for a private prop but found a non private one of the same name */
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return FAILURE;
|
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} else if (strcmp(prop_info_name+1, property_info->name+1)) {
|
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/* we we're looking for a private prop but found a private one of the same name but another class */
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return FAILURE;
|
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}
|
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}
|
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return zend_verify_property_access(property_info, zobj->ce TSRMLS_CC) ? SUCCESS : FAILURE;
|
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}
|
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/* }}} */
|
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static int zend_get_property_guard(zend_object *zobj, zend_property_info *property_info, zval *member, zend_guard **pguard) /* {{{ */
|
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{
|
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zend_property_info info;
|
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zend_guard stub;
|
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|
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if (!property_info) {
|
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property_info = &info;
|
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info.name = Z_STRVAL_P(member);
|
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info.name_length = Z_STRLEN_P(member);
|
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info.h = zend_get_hash_value(Z_STRVAL_P(member), Z_STRLEN_P(member) + 1);
|
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} else if(property_info->name[0] == '\0'){
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const char *class_name = NULL, *prop_name = NULL;
|
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zend_unmangle_property_name(property_info->name, property_info->name_length, &class_name, &prop_name);
|
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if(class_name) {
|
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/* use unmangled name for protected properties */
|
|
info.name = prop_name;
|
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info.name_length = strlen(prop_name);
|
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info.h = zend_get_hash_value(info.name, info.name_length+1);
|
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property_info = &info;
|
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}
|
|
}
|
|
if (!zobj->guards) {
|
|
ALLOC_HASHTABLE(zobj->guards);
|
|
zend_hash_init(zobj->guards, 0, NULL, NULL, 0);
|
|
} else if (zend_hash_quick_find(zobj->guards, property_info->name, property_info->name_length+1, property_info->h, (void **) pguard) == SUCCESS) {
|
|
return SUCCESS;
|
|
}
|
|
stub.in_get = 0;
|
|
stub.in_set = 0;
|
|
stub.in_unset = 0;
|
|
stub.in_isset = 0;
|
|
return zend_hash_quick_add(zobj->guards, property_info->name, property_info->name_length+1, property_info->h, (void**)&stub, sizeof(stub), (void**) pguard);
|
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}
|
|
/* }}} */
|
|
|
|
zval *zend_std_read_property(zval *object, zval *member, int type, const zend_literal *key TSRMLS_DC) /* {{{ */
|
|
{
|
|
zend_object *zobj;
|
|
zval *tmp_member = NULL;
|
|
zval **retval;
|
|
zval *rv = NULL;
|
|
zend_property_info *property_info;
|
|
int silent;
|
|
|
|
silent = (type == BP_VAR_IS);
|
|
zobj = Z_OBJ_P(object);
|
|
|
|
if (UNEXPECTED(Z_TYPE_P(member) != IS_STRING)) {
|
|
ALLOC_ZVAL(tmp_member);
|
|
*tmp_member = *member;
|
|
INIT_PZVAL(tmp_member);
|
|
zval_copy_ctor(tmp_member);
|
|
convert_to_string(tmp_member);
|
|
member = tmp_member;
|
|
key = NULL;
|
|
}
|
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|
|
#if DEBUG_OBJECT_HANDLERS
|
|
fprintf(stderr, "Read object #%d property: %s\n", Z_OBJ_HANDLE_P(object), Z_STRVAL_P(member));
|
|
#endif
|
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|
|
/* 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, member, silent || (zobj->ce->__get != NULL), key TSRMLS_CC);
|
|
|
|
if (UNEXPECTED(!property_info) ||
|
|
((EXPECTED((property_info->flags & ZEND_ACC_STATIC) == 0) &&
|
|
property_info->offset >= 0) ?
|
|
(zobj->properties ?
|
|
((retval = (zval**)zobj->properties_table[property_info->offset]) == NULL) :
|
|
(*(retval = &zobj->properties_table[property_info->offset]) == NULL)) :
|
|
(UNEXPECTED(!zobj->properties) ||
|
|
UNEXPECTED(zend_hash_quick_find(zobj->properties, property_info->name, property_info->name_length+1, property_info->h, (void **) &retval) == FAILURE)))) {
|
|
zend_guard *guard = NULL;
|
|
|
|
if (zobj->ce->__get &&
|
|
zend_get_property_guard(zobj, property_info, member, &guard) == SUCCESS &&
|
|
!guard->in_get) {
|
|
/* have getter - try with it! */
|
|
Z_ADDREF_P(object);
|
|
if (PZVAL_IS_REF(object)) {
|
|
SEPARATE_ZVAL(&object);
|
|
}
|
|
guard->in_get = 1; /* prevent circular getting */
|
|
rv = zend_std_call_getter(object, member TSRMLS_CC);
|
|
guard->in_get = 0;
|
|
|
|
if (rv) {
|
|
retval = &rv;
|
|
if (!Z_ISREF_P(rv) &&
|
|
(type == BP_VAR_W || type == BP_VAR_RW || type == BP_VAR_UNSET)) {
|
|
if (Z_REFCOUNT_P(rv) > 0) {
|
|
zval *tmp = rv;
|
|
|
|
ALLOC_ZVAL(rv);
|
|
*rv = *tmp;
|
|
zval_copy_ctor(rv);
|
|
Z_UNSET_ISREF_P(rv);
|
|
Z_SET_REFCOUNT_P(rv, 0);
|
|
}
|
|
if (UNEXPECTED(Z_TYPE_P(rv) != IS_OBJECT)) {
|
|
zend_error(E_NOTICE, "Indirect modification of overloaded property %s::$%s has no effect", zobj->ce->name, Z_STRVAL_P(member));
|
|
}
|
|
}
|
|
} else {
|
|
retval = &EG(uninitialized_zval_ptr);
|
|
}
|
|
if (EXPECTED(*retval != object)) {
|
|
zval_ptr_dtor(&object);
|
|
} else {
|
|
Z_DELREF_P(object);
|
|
}
|
|
} else {
|
|
if (zobj->ce->__get && guard && guard->in_get == 1) {
|
|
if (Z_STRVAL_P(member)[0] == '\0') {
|
|
if (Z_STRLEN_P(member) == 0) {
|
|
zend_error(E_ERROR, "Cannot access empty property");
|
|
} else {
|
|
zend_error(E_ERROR, "Cannot access property started with '\\0'");
|
|
}
|
|
}
|
|
}
|
|
if (!silent) {
|
|
zend_error(E_NOTICE,"Undefined property: %s::$%s", zobj->ce->name, Z_STRVAL_P(member));
|
|
}
|
|
retval = &EG(uninitialized_zval_ptr);
|
|
}
|
|
}
|
|
if (UNEXPECTED(tmp_member != NULL)) {
|
|
Z_ADDREF_PP(retval);
|
|
zval_ptr_dtor(&tmp_member);
|
|
Z_DELREF_PP(retval);
|
|
}
|
|
return *retval;
|
|
}
|
|
/* }}} */
|
|
|
|
ZEND_API void zend_std_write_property(zval *object, zval *member, zval *value, const zend_literal *key TSRMLS_DC) /* {{{ */
|
|
{
|
|
zend_object *zobj;
|
|
zval *tmp_member = NULL;
|
|
zval **variable_ptr;
|
|
zend_property_info *property_info;
|
|
|
|
zobj = Z_OBJ_P(object);
|
|
|
|
if (UNEXPECTED(Z_TYPE_P(member) != IS_STRING)) {
|
|
ALLOC_ZVAL(tmp_member);
|
|
*tmp_member = *member;
|
|
INIT_PZVAL(tmp_member);
|
|
zval_copy_ctor(tmp_member);
|
|
convert_to_string(tmp_member);
|
|
member = tmp_member;
|
|
key = NULL;
|
|
}
|
|
|
|
property_info = zend_get_property_info_quick(zobj->ce, member, (zobj->ce->__set != NULL), key TSRMLS_CC);
|
|
|
|
if (EXPECTED(property_info != NULL) &&
|
|
((EXPECTED((property_info->flags & ZEND_ACC_STATIC) == 0) &&
|
|
property_info->offset >= 0) ?
|
|
(zobj->properties ?
|
|
((variable_ptr = (zval**)zobj->properties_table[property_info->offset]) != NULL) :
|
|
(*(variable_ptr = &zobj->properties_table[property_info->offset]) != NULL)) :
|
|
(EXPECTED(zobj->properties != NULL) &&
|
|
EXPECTED(zend_hash_quick_find(zobj->properties, property_info->name, property_info->name_length+1, property_info->h, (void **) &variable_ptr) == SUCCESS)))) {
|
|
/* 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 (PZVAL_IS_REF(*variable_ptr)) {
|
|
zval garbage = **variable_ptr; /* old value should be destroyed */
|
|
|
|
/* To check: can't *variable_ptr be some system variable like error_zval here? */
|
|
Z_TYPE_PP(variable_ptr) = Z_TYPE_P(value);
|
|
(*variable_ptr)->value = value->value;
|
|
if (Z_REFCOUNT_P(value) > 0) {
|
|
zval_copy_ctor(*variable_ptr);
|
|
} else {
|
|
efree(value);
|
|
}
|
|
zval_dtor(&garbage);
|
|
} else {
|
|
zval *garbage = *variable_ptr;
|
|
|
|
/* if we assign referenced variable, we should separate it */
|
|
Z_ADDREF_P(value);
|
|
if (PZVAL_IS_REF(value)) {
|
|
SEPARATE_ZVAL(&value);
|
|
}
|
|
*variable_ptr = value;
|
|
zval_ptr_dtor(&garbage);
|
|
}
|
|
}
|
|
} else {
|
|
zend_guard *guard = NULL;
|
|
|
|
if (zobj->ce->__set &&
|
|
zend_get_property_guard(zobj, property_info, member, &guard) == SUCCESS &&
|
|
!guard->in_set) {
|
|
Z_ADDREF_P(object);
|
|
if (PZVAL_IS_REF(object)) {
|
|
SEPARATE_ZVAL(&object);
|
|
}
|
|
guard->in_set = 1; /* prevent circular setting */
|
|
if (zend_std_call_setter(object, member, value TSRMLS_CC) != SUCCESS) {
|
|
/* for now, just ignore it - __set should take care of warnings, etc. */
|
|
}
|
|
guard->in_set = 0;
|
|
zval_ptr_dtor(&object);
|
|
} else if (EXPECTED(property_info != NULL)) {
|
|
/* if we assign referenced variable, we should separate it */
|
|
Z_ADDREF_P(value);
|
|
if (PZVAL_IS_REF(value)) {
|
|
SEPARATE_ZVAL(&value);
|
|
}
|
|
if (EXPECTED((property_info->flags & ZEND_ACC_STATIC) == 0) &&
|
|
property_info->offset >= 0) {
|
|
if (!zobj->properties) {
|
|
zobj->properties_table[property_info->offset] = value;
|
|
} else if (zobj->properties_table[property_info->offset]) {
|
|
*(zval**)zobj->properties_table[property_info->offset] = value;
|
|
} else {
|
|
zend_hash_quick_update(zobj->properties, property_info->name, property_info->name_length+1, property_info->h, &value, sizeof(zval *), (void**)&zobj->properties_table[property_info->offset]);
|
|
}
|
|
} else {
|
|
if (!zobj->properties) {
|
|
rebuild_object_properties(zobj);
|
|
}
|
|
zend_hash_quick_update(zobj->properties, property_info->name, property_info->name_length+1, property_info->h, &value, sizeof(zval *), NULL);
|
|
}
|
|
} else if (zobj->ce->__set && guard && guard->in_set == 1) {
|
|
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 (UNEXPECTED(tmp_member != NULL)) {
|
|
zval_ptr_dtor(&tmp_member);
|
|
}
|
|
}
|
|
/* }}} */
|
|
|
|
zval *zend_std_read_dimension(zval *object, zval *offset, int type TSRMLS_DC) /* {{{ */
|
|
{
|
|
zend_class_entry *ce = Z_OBJCE_P(object);
|
|
zval *retval;
|
|
|
|
if (EXPECTED(instanceof_function_ex(ce, zend_ce_arrayaccess, 1 TSRMLS_CC) != 0)) {
|
|
if(offset == NULL) {
|
|
/* [] construct */
|
|
ALLOC_INIT_ZVAL(offset);
|
|
} else {
|
|
SEPARATE_ARG_IF_REF(offset);
|
|
}
|
|
zend_call_method_with_1_params(&object, ce, NULL, "offsetget", &retval, offset);
|
|
|
|
zval_ptr_dtor(&offset);
|
|
|
|
if (UNEXPECTED(!retval)) {
|
|
if (UNEXPECTED(!EG(exception))) {
|
|
zend_error_noreturn(E_ERROR, "Undefined offset for object of type %s used as array", ce->name);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/* Undo PZVAL_LOCK() */
|
|
Z_DELREF_P(retval);
|
|
|
|
return retval;
|
|
} else {
|
|
zend_error_noreturn(E_ERROR, "Cannot use object of type %s as array", ce->name);
|
|
return 0;
|
|
}
|
|
}
|
|
/* }}} */
|
|
|
|
static void zend_std_write_dimension(zval *object, zval *offset, zval *value TSRMLS_DC) /* {{{ */
|
|
{
|
|
zend_class_entry *ce = Z_OBJCE_P(object);
|
|
|
|
if (EXPECTED(instanceof_function_ex(ce, zend_ce_arrayaccess, 1 TSRMLS_CC) != 0)) {
|
|
if (!offset) {
|
|
ALLOC_INIT_ZVAL(offset);
|
|
} 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);
|
|
}
|
|
}
|
|
/* }}} */
|
|
|
|
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(retval != NULL)) {
|
|
result = i_zend_is_true(retval);
|
|
zval_ptr_dtor(&retval);
|
|
if (check_empty && result && EXPECTED(!EG(exception))) {
|
|
zend_call_method_with_1_params(&object, ce, NULL, "offsetget", &retval, offset);
|
|
if (retval) {
|
|
result = i_zend_is_true(retval);
|
|
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);
|
|
return 0;
|
|
}
|
|
return result;
|
|
}
|
|
/* }}} */
|
|
|
|
static zval **zend_std_get_property_ptr_ptr(zval *object, zval *member, int type, const zend_literal *key TSRMLS_DC) /* {{{ */
|
|
{
|
|
zend_object *zobj;
|
|
zval tmp_member;
|
|
zval **retval;
|
|
zend_property_info *property_info;
|
|
|
|
zobj = Z_OBJ_P(object);
|
|
|
|
if (UNEXPECTED(Z_TYPE_P(member) != IS_STRING)) {
|
|
tmp_member = *member;
|
|
zval_copy_ctor(&tmp_member);
|
|
convert_to_string(&tmp_member);
|
|
member = &tmp_member;
|
|
key = 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, member, (zobj->ce->__get != NULL), key TSRMLS_CC);
|
|
|
|
if (UNEXPECTED(!property_info) ||
|
|
((EXPECTED((property_info->flags & ZEND_ACC_STATIC) == 0) &&
|
|
property_info->offset >= 0) ?
|
|
(zobj->properties ?
|
|
((retval = (zval**)zobj->properties_table[property_info->offset]) == NULL) :
|
|
(*(retval = &zobj->properties_table[property_info->offset]) == NULL)) :
|
|
(UNEXPECTED(!zobj->properties) ||
|
|
UNEXPECTED(zend_hash_quick_find(zobj->properties, property_info->name, property_info->name_length+1, property_info->h, (void **) &retval) == FAILURE)))) {
|
|
zval *new_zval;
|
|
zend_guard *guard;
|
|
|
|
if (!zobj->ce->__get ||
|
|
zend_get_property_guard(zobj, property_info, member, &guard) != SUCCESS ||
|
|
(property_info && guard->in_get)) {
|
|
/* we don't have access controls - will just add it */
|
|
new_zval = &EG(uninitialized_zval);
|
|
|
|
Z_ADDREF_P(new_zval);
|
|
if (EXPECTED((property_info->flags & ZEND_ACC_STATIC) == 0) &&
|
|
property_info->offset >= 0) {
|
|
if (!zobj->properties) {
|
|
zobj->properties_table[property_info->offset] = new_zval;
|
|
retval = &zobj->properties_table[property_info->offset];
|
|
} else if (zobj->properties_table[property_info->offset]) {
|
|
*(zval**)zobj->properties_table[property_info->offset] = new_zval;
|
|
retval = (zval**)zobj->properties_table[property_info->offset];
|
|
} else {
|
|
zend_hash_quick_update(zobj->properties, property_info->name, property_info->name_length+1, property_info->h, &new_zval, sizeof(zval *), (void**)&zobj->properties_table[property_info->offset]);
|
|
retval = (zval**)zobj->properties_table[property_info->offset];
|
|
}
|
|
} else {
|
|
if (!zobj->properties) {
|
|
rebuild_object_properties(zobj);
|
|
}
|
|
zend_hash_quick_update(zobj->properties, property_info->name, property_info->name_length+1, property_info->h, &new_zval, sizeof(zval *), (void **) &retval);
|
|
}
|
|
|
|
/* 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, Z_STRVAL_P(member));
|
|
}
|
|
} else {
|
|
/* we do have getter - fail and let it try again with usual get/set */
|
|
retval = NULL;
|
|
}
|
|
}
|
|
if (UNEXPECTED(member == &tmp_member)) {
|
|
zval_dtor(member);
|
|
}
|
|
return retval;
|
|
}
|
|
/* }}} */
|
|
|
|
static void zend_std_unset_property(zval *object, zval *member, const zend_literal *key TSRMLS_DC) /* {{{ */
|
|
{
|
|
zend_object *zobj;
|
|
zval *tmp_member = NULL;
|
|
zend_property_info *property_info;
|
|
|
|
zobj = Z_OBJ_P(object);
|
|
|
|
if (UNEXPECTED(Z_TYPE_P(member) != IS_STRING)) {
|
|
ALLOC_ZVAL(tmp_member);
|
|
*tmp_member = *member;
|
|
INIT_PZVAL(tmp_member);
|
|
zval_copy_ctor(tmp_member);
|
|
convert_to_string(tmp_member);
|
|
member = tmp_member;
|
|
key = NULL;
|
|
}
|
|
|
|
property_info = zend_get_property_info_quick(zobj->ce, member, (zobj->ce->__unset != NULL), key TSRMLS_CC);
|
|
|
|
if (EXPECTED(property_info != NULL) &&
|
|
EXPECTED((property_info->flags & ZEND_ACC_STATIC) == 0) &&
|
|
!zobj->properties &&
|
|
property_info->offset >= 0 &&
|
|
EXPECTED(zobj->properties_table[property_info->offset] != NULL)) {
|
|
zval_ptr_dtor(&zobj->properties_table[property_info->offset]);
|
|
zobj->properties_table[property_info->offset] = NULL;
|
|
} else if (UNEXPECTED(!property_info) ||
|
|
!zobj->properties ||
|
|
UNEXPECTED(zend_hash_quick_del(zobj->properties, property_info->name, property_info->name_length+1, property_info->h) == FAILURE)) {
|
|
zend_guard *guard = NULL;
|
|
|
|
if (zobj->ce->__unset &&
|
|
zend_get_property_guard(zobj, property_info, member, &guard) == SUCCESS &&
|
|
!guard->in_unset) {
|
|
/* have unseter - try with it! */
|
|
Z_ADDREF_P(object);
|
|
if (PZVAL_IS_REF(object)) {
|
|
SEPARATE_ZVAL(&object);
|
|
}
|
|
guard->in_unset = 1; /* prevent circular unsetting */
|
|
zend_std_call_unsetter(object, member TSRMLS_CC);
|
|
guard->in_unset = 0;
|
|
zval_ptr_dtor(&object);
|
|
} else if (zobj->ce->__unset && guard && guard->in_unset == 1) {
|
|
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) &&
|
|
EXPECTED((property_info->flags & ZEND_ACC_STATIC) == 0) &&
|
|
property_info->offset >= 0) {
|
|
zobj->properties_table[property_info->offset] = NULL;
|
|
}
|
|
|
|
if (UNEXPECTED(tmp_member != 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);
|
|
}
|
|
}
|
|
/* }}} */
|
|
|
|
ZEND_API void zend_std_call_user_call(INTERNAL_FUNCTION_PARAMETERS) /* {{{ */
|
|
{
|
|
zend_internal_function *func = (zend_internal_function *)EG(current_execute_data)->function_state.function;
|
|
zval *method_name_ptr, *method_args_ptr;
|
|
zval *method_result_ptr = NULL;
|
|
zend_class_entry *ce = Z_OBJCE_P(this_ptr);
|
|
|
|
ALLOC_ZVAL(method_args_ptr);
|
|
INIT_PZVAL(method_args_ptr);
|
|
array_init_size(method_args_ptr, ZEND_NUM_ARGS());
|
|
|
|
if (UNEXPECTED(zend_copy_parameters_array(ZEND_NUM_ARGS(), method_args_ptr TSRMLS_CC) == FAILURE)) {
|
|
zval_dtor(method_args_ptr);
|
|
zend_error_noreturn(E_ERROR, "Cannot get arguments for __call");
|
|
RETURN_FALSE;
|
|
}
|
|
|
|
ALLOC_ZVAL(method_name_ptr);
|
|
INIT_PZVAL(method_name_ptr);
|
|
ZVAL_STRING(method_name_ptr, func->function_name, 0); /* 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(&this_ptr, ce, &ce->__call, ZEND_CALL_FUNC_NAME, &method_result_ptr, method_name_ptr, method_args_ptr);
|
|
|
|
if (method_result_ptr) {
|
|
if (Z_ISREF_P(method_result_ptr) || Z_REFCOUNT_P(method_result_ptr) > 1) {
|
|
RETVAL_ZVAL(method_result_ptr, 1, 1);
|
|
} else {
|
|
RETVAL_ZVAL(method_result_ptr, 0, 1);
|
|
}
|
|
}
|
|
|
|
/* now destruct all auxiliaries */
|
|
zval_ptr_dtor(&method_args_ptr);
|
|
zval_ptr_dtor(&method_name_ptr);
|
|
|
|
/* destruct the function also, then - we have allocated it in get_method */
|
|
efree(func);
|
|
}
|
|
/* }}} */
|
|
|
|
/* 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, char *function_name_strval, int function_name_strlen, ulong hash_value TSRMLS_DC) /* {{{ */
|
|
{
|
|
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 (zend_hash_quick_find(&ce->function_table, function_name_strval, function_name_strlen+1, hash_value, (void **) &fbc)==SUCCESS
|
|
&& fbc->op_array.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, char *function_name_strval, int function_name_strlen TSRMLS_DC) /* {{{ */
|
|
{
|
|
return zend_check_private_int(fbc, ce, function_name_strval, function_name_strlen, zend_hash_func(function_name_strval, function_name_strlen+1) 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, const char *method_name, int method_len) /* {{{ */
|
|
{
|
|
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;
|
|
call_user_call->function_name = estrndup(method_name, method_len);
|
|
|
|
return (union _zend_function *)call_user_call;
|
|
}
|
|
/* }}} */
|
|
|
|
static union _zend_function *zend_std_get_method(zval **object_ptr, char *method_name, int method_len, const zend_literal *key TSRMLS_DC) /* {{{ */
|
|
{
|
|
zend_function *fbc;
|
|
zval *object = *object_ptr;
|
|
zend_object *zobj = Z_OBJ_P(object);
|
|
ulong hash_value;
|
|
char *lc_method_name;
|
|
ALLOCA_FLAG(use_heap)
|
|
|
|
if (EXPECTED(key != NULL)) {
|
|
lc_method_name = Z_STRVAL(key->constant);
|
|
hash_value = key->hash_value;
|
|
} else {
|
|
lc_method_name = do_alloca(method_len+1, use_heap);
|
|
/* Create a zend_copy_str_tolower(dest, src, src_length); */
|
|
zend_str_tolower_copy(lc_method_name, method_name, method_len);
|
|
hash_value = zend_hash_func(lc_method_name, method_len+1);
|
|
}
|
|
|
|
if (UNEXPECTED(zend_hash_quick_find(&zobj->ce->function_table, lc_method_name, method_len+1, hash_value, (void **)&fbc) == FAILURE)) {
|
|
if (UNEXPECTED(!key)) {
|
|
free_alloca(lc_method_name, use_heap);
|
|
}
|
|
if (zobj->ce->__call) {
|
|
return zend_get_user_call_function(zobj->ce, method_name, method_len);
|
|
} else {
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
/* 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, Z_OBJ_HANDLER_P(object, get_class_entry)(object TSRMLS_CC), lc_method_name, method_len, hash_value 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, method_len);
|
|
} 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, EG(scope) ? EG(scope)->name : "");
|
|
}
|
|
}
|
|
} 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) {
|
|
zend_function *priv_fbc;
|
|
|
|
if (zend_hash_quick_find(&EG(scope)->function_table, lc_method_name, method_len+1, hash_value, (void **) &priv_fbc)==SUCCESS
|
|
&& 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, method_len);
|
|
} 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, EG(scope) ? EG(scope)->name : "");
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (UNEXPECTED(!key)) {
|
|
free_alloca(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 *)EG(current_execute_data)->function_state.function;
|
|
zval *method_name_ptr, *method_args_ptr;
|
|
zval *method_result_ptr = NULL;
|
|
zend_class_entry *ce = EG(scope);
|
|
|
|
ALLOC_ZVAL(method_args_ptr);
|
|
INIT_PZVAL(method_args_ptr);
|
|
array_init_size(method_args_ptr, ZEND_NUM_ARGS());
|
|
|
|
if (UNEXPECTED(zend_copy_parameters_array(ZEND_NUM_ARGS(), method_args_ptr TSRMLS_CC) == FAILURE)) {
|
|
zval_dtor(method_args_ptr);
|
|
zend_error_noreturn(E_ERROR, "Cannot get arguments for " ZEND_CALLSTATIC_FUNC_NAME);
|
|
RETURN_FALSE;
|
|
}
|
|
|
|
ALLOC_ZVAL(method_name_ptr);
|
|
INIT_PZVAL(method_name_ptr);
|
|
ZVAL_STRING(method_name_ptr, func->function_name, 0); /* 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_ptr, method_name_ptr, method_args_ptr);
|
|
|
|
if (method_result_ptr) {
|
|
if (Z_ISREF_P(method_result_ptr) || Z_REFCOUNT_P(method_result_ptr) > 1) {
|
|
RETVAL_ZVAL(method_result_ptr, 1, 1);
|
|
} else {
|
|
RETVAL_ZVAL(method_result_ptr, 0, 1);
|
|
}
|
|
}
|
|
|
|
/* now destruct all auxiliaries */
|
|
zval_ptr_dtor(&method_args_ptr);
|
|
zval_ptr_dtor(&method_name_ptr);
|
|
|
|
/* destruct the function also, then - we have allocated it in get_method */
|
|
efree(func);
|
|
}
|
|
/* }}} */
|
|
|
|
static inline union _zend_function *zend_get_user_callstatic_function(zend_class_entry *ce, const char *method_name, int method_len) /* {{{ */
|
|
{
|
|
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;
|
|
callstatic_user_call->function_name = estrndup(method_name, method_len);
|
|
|
|
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, const char *function_name_strval, int function_name_strlen, const zend_literal *key TSRMLS_DC) /* {{{ */
|
|
{
|
|
zend_function *fbc = NULL;
|
|
char *lc_class_name, *lc_function_name = NULL;
|
|
ulong hash_value;
|
|
ALLOCA_FLAG(use_heap)
|
|
|
|
if (EXPECTED(key != NULL)) {
|
|
lc_function_name = Z_STRVAL(key->constant);
|
|
hash_value = key->hash_value;
|
|
} else {
|
|
lc_function_name = do_alloca(function_name_strlen+1, use_heap);
|
|
/* Create a zend_copy_str_tolower(dest, src, src_length); */
|
|
zend_str_tolower_copy(lc_function_name, function_name_strval, function_name_strlen);
|
|
hash_value = zend_hash_func(lc_function_name, function_name_strlen+1);
|
|
}
|
|
|
|
if (function_name_strlen == ce->name_length && ce->constructor) {
|
|
lc_class_name = zend_str_tolower_dup(ce->name, ce->name_length);
|
|
/* 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, function_name_strlen) && memcmp(ce->constructor->common.function_name, "__", sizeof("__") - 1)) {
|
|
fbc = ce->constructor;
|
|
}
|
|
efree(lc_class_name);
|
|
}
|
|
if (EXPECTED(!fbc) &&
|
|
UNEXPECTED(zend_hash_quick_find(&ce->function_table, lc_function_name, function_name_strlen+1, hash_value, (void **) &fbc)==FAILURE)) {
|
|
if (UNEXPECTED(!key)) {
|
|
free_alloca(lc_function_name, use_heap);
|
|
}
|
|
|
|
if (ce->__call &&
|
|
EG(This) &&
|
|
Z_OBJ_HT_P(EG(This))->get_class_entry &&
|
|
instanceof_function(Z_OBJCE_P(EG(This)), ce TSRMLS_CC)) {
|
|
return zend_get_user_call_function(ce, function_name_strval, function_name_strlen);
|
|
} else if (ce->__callstatic) {
|
|
return zend_get_user_callstatic_function(ce, function_name_strval, function_name_strlen);
|
|
} 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);
|
|
}
|
|
#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, function_name_strlen, hash_value TSRMLS_CC);
|
|
if (EXPECTED(updated_fbc != NULL)) {
|
|
fbc = updated_fbc;
|
|
} else {
|
|
if (ce->__callstatic) {
|
|
fbc = zend_get_user_callstatic_function(ce, function_name_strval, function_name_strlen);
|
|
} 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_strval, EG(scope) ? EG(scope)->name : "");
|
|
}
|
|
}
|
|
} 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_strval, function_name_strlen);
|
|
} 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_strval, EG(scope) ? EG(scope)->name : "");
|
|
}
|
|
}
|
|
}
|
|
|
|
if (UNEXPECTED(!key)) {
|
|
free_alloca(lc_function_name, use_heap);
|
|
}
|
|
|
|
return fbc;
|
|
}
|
|
/* }}} */
|
|
|
|
ZEND_API zval **zend_std_get_static_property(zend_class_entry *ce, const char *property_name, int property_name_len, zend_bool silent, const zend_literal *key TSRMLS_DC) /* {{{ */
|
|
{
|
|
zend_property_info *property_info;
|
|
ulong hash_value;
|
|
|
|
if (UNEXPECTED(!key) ||
|
|
(property_info = CACHED_POLYMORPHIC_PTR(key->cache_slot, ce)) == NULL) {
|
|
if (EXPECTED(key != NULL)) {
|
|
hash_value = key->hash_value;
|
|
} else {
|
|
hash_value = zend_hash_func(property_name, property_name_len+1);
|
|
}
|
|
|
|
if (UNEXPECTED(zend_hash_quick_find(&ce->properties_info, property_name, property_name_len+1, hash_value, (void **) &property_info)==FAILURE)) {
|
|
if (!silent) {
|
|
zend_error_noreturn(E_ERROR, "Access to undeclared static property: %s::$%s", ce->name, property_name);
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
#if DEBUG_OBJECT_HANDLERS
|
|
zend_printf("Access type for %s::%s is %s\n", ce->name, property_name, zend_visibility_string(property_info->flags));
|
|
#endif
|
|
|
|
if (UNEXPECTED(!zend_verify_property_access(property_info, ce TSRMLS_CC))) {
|
|
if (!silent) {
|
|
zend_error_noreturn(E_ERROR, "Cannot access %s property %s::$%s", zend_visibility_string(property_info->flags), ce->name, property_name);
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
if (UNEXPECTED((property_info->flags & ZEND_ACC_STATIC) == 0)) {
|
|
if (!silent) {
|
|
zend_error_noreturn(E_ERROR, "Access to undeclared static property: %s::$%s", ce->name, property_name);
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
zend_update_class_constants(ce TSRMLS_CC);
|
|
|
|
if (EXPECTED(key != NULL)) {
|
|
CACHE_POLYMORPHIC_PTR(key->cache_slot, ce, property_info);
|
|
}
|
|
}
|
|
|
|
if (UNEXPECTED(CE_STATIC_MEMBERS(ce) == NULL) ||
|
|
UNEXPECTED(CE_STATIC_MEMBERS(ce)[property_info->offset] == NULL)) {
|
|
if (!silent) {
|
|
zend_error_noreturn(E_ERROR, "Access to undeclared static property: %s::$%s", ce->name, property_name);
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
return &CE_STATIC_MEMBERS(ce)[property_info->offset];
|
|
}
|
|
/* }}} */
|
|
|
|
ZEND_API zend_bool zend_std_unset_static_property(zend_class_entry *ce, const char *property_name, int property_name_len, const zend_literal *key TSRMLS_DC) /* {{{ */
|
|
{
|
|
zend_error_noreturn(E_ERROR, "Attempt to unset static property %s::$%s", ce->name, property_name);
|
|
return 0;
|
|
}
|
|
/* }}} */
|
|
|
|
ZEND_API union _zend_function *zend_std_get_constructor(zval *object TSRMLS_DC) /* {{{ */
|
|
{
|
|
zend_object *zobj = Z_OBJ_P(object);
|
|
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, constructor->common.function_name, EG(scope)->name);
|
|
} else {
|
|
zend_error_noreturn(E_ERROR, "Call to private %s::%s() from invalid context", constructor->common.scope->name, constructor->common.function_name);
|
|
}
|
|
}
|
|
} 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, constructor->common.function_name, EG(scope)->name);
|
|
} else {
|
|
zend_error_noreturn(E_ERROR, "Call to protected %s::%s() from invalid context", constructor->common.scope->name, constructor->common.function_name);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
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 (zobj1->properties_table[i]) {
|
|
if (zobj2->properties_table[i]) {
|
|
zval result;
|
|
|
|
if (compare_function(&result, zobj1->properties_table[i], zobj2->properties_table[i] 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 (zobj2->properties_table[i]) {
|
|
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, const zend_literal *key TSRMLS_DC) /* {{{ */
|
|
{
|
|
zend_object *zobj;
|
|
int result;
|
|
zval **value = NULL;
|
|
zval *tmp_member = NULL;
|
|
zend_property_info *property_info;
|
|
|
|
zobj = Z_OBJ_P(object);
|
|
|
|
if (UNEXPECTED(Z_TYPE_P(member) != IS_STRING)) {
|
|
ALLOC_ZVAL(tmp_member);
|
|
*tmp_member = *member;
|
|
INIT_PZVAL(tmp_member);
|
|
zval_copy_ctor(tmp_member);
|
|
convert_to_string(tmp_member);
|
|
member = tmp_member;
|
|
key = NULL;
|
|
}
|
|
|
|
#if DEBUG_OBJECT_HANDLERS
|
|
fprintf(stderr, "Read object #%d property: %s\n", Z_OBJ_HANDLE_P(object), Z_STRVAL_P(member));
|
|
#endif
|
|
|
|
property_info = zend_get_property_info_quick(zobj->ce, member, 1, key TSRMLS_CC);
|
|
|
|
if (UNEXPECTED(!property_info) ||
|
|
((EXPECTED((property_info->flags & ZEND_ACC_STATIC) == 0) &&
|
|
property_info->offset >= 0) ?
|
|
(zobj->properties ?
|
|
((value = (zval**)zobj->properties_table[property_info->offset]) == NULL) :
|
|
(*(value = &zobj->properties_table[property_info->offset]) == NULL)) :
|
|
(UNEXPECTED(!zobj->properties) ||
|
|
UNEXPECTED(zend_hash_quick_find(zobj->properties, property_info->name, property_info->name_length+1, property_info->h, (void **) &value) == FAILURE)))) {
|
|
zend_guard *guard;
|
|
|
|
result = 0;
|
|
if ((has_set_exists != 2) &&
|
|
zobj->ce->__isset &&
|
|
zend_get_property_guard(zobj, property_info, member, &guard) == SUCCESS &&
|
|
!guard->in_isset) {
|
|
zval *rv;
|
|
|
|
/* have issetter - try with it! */
|
|
Z_ADDREF_P(object);
|
|
if (PZVAL_IS_REF(object)) {
|
|
SEPARATE_ZVAL(&object);
|
|
}
|
|
guard->in_isset = 1; /* prevent circular getting */
|
|
rv = zend_std_call_issetter(object, member TSRMLS_CC);
|
|
if (rv) {
|
|
result = zend_is_true(rv);
|
|
zval_ptr_dtor(&rv);
|
|
if (has_set_exists && result) {
|
|
if (EXPECTED(!EG(exception)) && zobj->ce->__get && !guard->in_get) {
|
|
guard->in_get = 1;
|
|
rv = zend_std_call_getter(object, member TSRMLS_CC);
|
|
guard->in_get = 0;
|
|
if (rv) {
|
|
Z_ADDREF_P(rv);
|
|
result = i_zend_is_true(rv);
|
|
zval_ptr_dtor(&rv);
|
|
} else {
|
|
result = 0;
|
|
}
|
|
} else {
|
|
result = 0;
|
|
}
|
|
}
|
|
}
|
|
guard->in_isset = 0;
|
|
zval_ptr_dtor(&object);
|
|
}
|
|
} else {
|
|
switch (has_set_exists) {
|
|
case 0:
|
|
result = (Z_TYPE_PP(value) != IS_NULL);
|
|
break;
|
|
default:
|
|
result = zend_is_true(*value);
|
|
break;
|
|
case 2:
|
|
result = 1;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (UNEXPECTED(tmp_member != NULL)) {
|
|
zval_ptr_dtor(&tmp_member);
|
|
}
|
|
return result;
|
|
}
|
|
/* }}} */
|
|
|
|
zend_class_entry *zend_std_object_get_class(const zval *object TSRMLS_DC) /* {{{ */
|
|
{
|
|
zend_object *zobj;
|
|
zobj = Z_OBJ_P(object);
|
|
|
|
return zobj->ce;
|
|
}
|
|
/* }}} */
|
|
|
|
int zend_std_object_get_class_name(const zval *object, const char **class_name, zend_uint *class_name_len, int parent TSRMLS_DC) /* {{{ */
|
|
{
|
|
zend_object *zobj;
|
|
zend_class_entry *ce;
|
|
zobj = Z_OBJ_P(object);
|
|
|
|
if (parent) {
|
|
if (!zobj->ce->parent) {
|
|
return FAILURE;
|
|
}
|
|
ce = zobj->ce->parent;
|
|
} else {
|
|
ce = zobj->ce;
|
|
}
|
|
|
|
*class_name_len = ce->name_length;
|
|
*class_name = estrndup(ce->name, ce->name_length);
|
|
return SUCCESS;
|
|
}
|
|
/* }}} */
|
|
|
|
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)) {
|
|
if (retval) {
|
|
zval_ptr_dtor(&retval);
|
|
}
|
|
EG(exception) = NULL;
|
|
zend_error_noreturn(E_ERROR, "Method %s::__toString() must not throw an exception", ce->name);
|
|
return FAILURE;
|
|
}
|
|
if (EXPECTED(Z_TYPE_P(retval) == IS_STRING)) {
|
|
INIT_PZVAL(writeobj);
|
|
if (readobj == writeobj) {
|
|
zval_dtor(readobj);
|
|
}
|
|
ZVAL_ZVAL(writeobj, retval, 1, 1);
|
|
if (Z_TYPE_P(writeobj) != type) {
|
|
convert_to_explicit_type(writeobj, type);
|
|
}
|
|
return SUCCESS;
|
|
} else {
|
|
zval_ptr_dtor(&retval);
|
|
INIT_PZVAL(writeobj);
|
|
if (readobj == writeobj) {
|
|
zval_dtor(readobj);
|
|
}
|
|
ZVAL_EMPTY_STRING(writeobj);
|
|
zend_error(E_RECOVERABLE_ERROR, "Method %s::__toString() must return a string value", ce->name);
|
|
return SUCCESS;
|
|
}
|
|
}
|
|
return FAILURE;
|
|
case IS_BOOL:
|
|
INIT_PZVAL(writeobj);
|
|
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);
|
|
INIT_PZVAL(writeobj);
|
|
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);
|
|
INIT_PZVAL(writeobj);
|
|
if (readobj == writeobj) {
|
|
zval_dtor(readobj);
|
|
}
|
|
ZVAL_DOUBLE(writeobj, 1);
|
|
return SUCCESS;
|
|
default:
|
|
INIT_PZVAL(writeobj);
|
|
Z_TYPE_P(writeobj) = IS_NULL;
|
|
break;
|
|
}
|
|
return FAILURE;
|
|
}
|
|
/* }}} */
|
|
|
|
int zend_std_get_closure(zval *obj, zend_class_entry **ce_ptr, zend_function **fptr_ptr, zval **zobj_ptr TSRMLS_DC) /* {{{ */
|
|
{
|
|
zend_class_entry *ce;
|
|
if (Z_TYPE_P(obj) != IS_OBJECT) {
|
|
return FAILURE;
|
|
}
|
|
|
|
ce = Z_OBJCE_P(obj);
|
|
|
|
if (zend_hash_find(&ce->function_table, ZEND_INVOKE_FUNC_NAME, sizeof(ZEND_INVOKE_FUNC_NAME), (void**)fptr_ptr) == FAILURE) {
|
|
return FAILURE;
|
|
}
|
|
|
|
*ce_ptr = ce;
|
|
if ((*fptr_ptr)->common.fn_flags & ZEND_ACC_STATIC) {
|
|
if (zobj_ptr) {
|
|
*zobj_ptr = NULL;
|
|
}
|
|
} else {
|
|
if (zobj_ptr) {
|
|
*zobj_ptr = obj;
|
|
}
|
|
}
|
|
return SUCCESS;
|
|
}
|
|
/* }}} */
|
|
|
|
ZEND_API zend_object_handlers std_object_handlers = {
|
|
zend_objects_store_add_ref, /* add_ref */
|
|
zend_objects_store_del_ref, /* del_ref */
|
|
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, /* get_class_entry */
|
|
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 */
|
|
NULL, /* get_debug_info */
|
|
zend_std_get_closure, /* get_closure */
|
|
zend_std_get_gc, /* get_gc */
|
|
};
|
|
|
|
/*
|
|
* Local variables:
|
|
* tab-width: 4
|
|
* c-basic-offset: 4
|
|
* indent-tabs-mode: t
|
|
* End:
|
|
*/
|