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php-src/Zend/zend_object_handlers.c

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/*
+----------------------------------------------------------------------+
| Zend Engine |
+----------------------------------------------------------------------+
| Copyright (c) 1998-2014 Zend Technologies Ltd. (http://www.zend.com) |
+----------------------------------------------------------------------+
| This source file is subject to version 2.00 of the Zend license, |
| that is bundled with this package in the file LICENSE, and is |
| available through the world-wide-web at the following url: |
| http://www.zend.com/license/2_00.txt. |
| If you did not receive a copy of the Zend license and are unable to |
| obtain it through the world-wide-web, please send a note to |
| license@zend.com so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Authors: Andi Gutmans <andi@zend.com> |
| Zeev Suraski <zeev@zend.com> |
+----------------------------------------------------------------------+
*/
/* $Id$ */
#include "zend.h"
#include "zend_globals.h"
#include "zend_variables.h"
#include "zend_API.h"
#include "zend_objects.h"
#include "zend_objects_API.h"
#include "zend_object_handlers.h"
#include "zend_interfaces.h"
#include "zend_closures.h"
#include "zend_compile.h"
#include "zend_hash.h"
#define DEBUG_OBJECT_HANDLERS 0
/* guard flags */
#define IN_GET (1<<0)
#define IN_SET (1<<1)
#define IN_UNSET (1<<2)
#define IN_ISSET (1<<3)
#define Z_OBJ_PROTECT_RECURSION(zval_p) \
do { \
if (Z_OBJ_APPLY_COUNT_P(zval_p) >= 3) { \
zend_error(E_ERROR, "Nesting level too deep - recursive dependency?"); \
} \
Z_OBJ_INC_APPLY_COUNT_P(zval_p); \
} while (0)
#define Z_OBJ_UNPROTECT_RECURSION(zval_p) \
Z_OBJ_DEC_APPLY_COUNT_P(zval_p)
/*
__X accessors explanation:
if we have __get and property that is not part of the properties array is
requested, we call __get handler. If it fails, we return uninitialized.
if we have __set and property that is not part of the properties array is
set, we call __set handler. If it fails, we do not change the array.
for both handlers above, when we are inside __get/__set, no further calls for
__get/__set for this property of this object will be made, to prevent endless
recursion and enable accessors to change properties array.
if we have __call and method which is not part of the class function table is
called, we cal __call handler.
*/
ZEND_API void rebuild_object_properties(zend_object *zobj) /* {{{ */
{
if (!zobj->properties) {
zend_property_info *prop_info;
zend_class_entry *ce = zobj->ce;
ALLOC_HASHTABLE(zobj->properties);
zend_hash_init(zobj->properties, ce->default_properties_count, NULL, ZVAL_PTR_DTOR, 0);
if (ce->default_properties_count) {
ZEND_HASH_FOREACH_PTR(&ce->properties_info, prop_info) {
if (/*prop_info->ce == ce &&*/
(prop_info->flags & ZEND_ACC_STATIC) == 0 &&
prop_info->offset >= 0 &&
Z_TYPE(zobj->properties_table[prop_info->offset]) != IS_UNDEF) {
zval zv;
ZVAL_INDIRECT(&zv, &zobj->properties_table[prop_info->offset]);
zend_hash_add_new(zobj->properties, prop_info->name, &zv);
}
} ZEND_HASH_FOREACH_END();
while (ce->parent && ce->parent->default_properties_count) {
ce = ce->parent;
ZEND_HASH_FOREACH_PTR(&ce->properties_info, prop_info) {
if (prop_info->ce == ce &&
(prop_info->flags & ZEND_ACC_STATIC) == 0 &&
(prop_info->flags & ZEND_ACC_PRIVATE) != 0 &&
prop_info->offset >= 0 &&
Z_TYPE(zobj->properties_table[prop_info->offset]) != IS_UNDEF) {
zval zv;
ZVAL_INDIRECT(&zv, &zobj->properties_table[prop_info->offset]);
zend_hash_add(zobj->properties, prop_info->name, &zv);
}
} ZEND_HASH_FOREACH_END();
}
}
}
}
/* }}} */
ZEND_API HashTable *zend_std_get_properties(zval *object TSRMLS_DC) /* {{{ */
{
zend_object *zobj;
zobj = Z_OBJ_P(object);
if (!zobj->properties) {
rebuild_object_properties(zobj);
}
return zobj->properties;
}
/* }}} */
ZEND_API HashTable *zend_std_get_gc(zval *object, zval **table, int *n TSRMLS_DC) /* {{{ */
{
if (Z_OBJ_HANDLER_P(object, get_properties) != zend_std_get_properties) {
*table = NULL;
*n = 0;
return Z_OBJ_HANDLER_P(object, get_properties)(object TSRMLS_CC);
} else {
zend_object *zobj = Z_OBJ_P(object);
*table = zobj->properties_table;
*n = zobj->ce->default_properties_count;
return zobj->properties;
}
}
/* }}} */
ZEND_API HashTable *zend_std_get_debug_info(zval *object, int *is_temp TSRMLS_DC) /* {{{ */
{
zend_class_entry *ce = Z_OBJCE_P(object);
zval retval;
HashTable *ht;
if (!ce->__debugInfo) {
*is_temp = 0;
return Z_OBJ_HANDLER_P(object, get_properties)
? Z_OBJ_HANDLER_P(object, get_properties)(object TSRMLS_CC)
: NULL;
}
zend_call_method_with_0_params(object, ce, &ce->__debugInfo, ZEND_DEBUGINFO_FUNC_NAME, &retval);
if (Z_TYPE(retval) == IS_ARRAY) {
if (Z_IMMUTABLE(retval)) {
*is_temp = 1;
ALLOC_HASHTABLE(ht);
zend_array_dup(ht, Z_ARRVAL(retval));
return ht;
} else if (Z_REFCOUNT(retval) <= 1) {
*is_temp = 1;
ALLOC_HASHTABLE(ht);
*ht = *Z_ARRVAL(retval);
efree(Z_ARR(retval));
return ht;
} else {
*is_temp = 0;
zval_ptr_dtor(&retval);
return Z_ARRVAL(retval);
}
} else if (Z_TYPE(retval) == IS_NULL) {
*is_temp = 1;
ALLOC_HASHTABLE(ht);
zend_hash_init(ht, 0, NULL, ZVAL_PTR_DTOR, 0);
return ht;
}
zend_error_noreturn(E_ERROR, ZEND_DEBUGINFO_FUNC_NAME "() must return an array");
return NULL; /* Compilers are dumb and don't understand that noreturn means that the function does NOT need a return value... */
}
/* }}} */
static void zend_std_call_getter(zval *object, zval *member, zval *retval TSRMLS_DC) /* {{{ */
{
zend_class_entry *ce = Z_OBJCE_P(object);
/* __get handler is called with one argument:
property name
it should return whether the call was successfull or not
*/
if (Z_REFCOUNTED_P(member)) Z_ADDREF_P(member);
zend_call_method_with_1_params(object, ce, &ce->__get, ZEND_GET_FUNC_NAME, retval, member);
zval_ptr_dtor(member);
}
/* }}} */
static int zend_std_call_setter(zval *object, zval *member, zval *value TSRMLS_DC) /* {{{ */
{
zval retval;
int result;
zend_class_entry *ce = Z_OBJCE_P(object);
if (Z_REFCOUNTED_P(member)) Z_ADDREF_P(member);
if (Z_REFCOUNTED_P(value)) Z_ADDREF_P(value);
/* __set handler is called with two arguments:
property name
value to be set
it should return whether the call was successfull or not
*/
zend_call_method_with_2_params(object, ce, &ce->__set, ZEND_SET_FUNC_NAME, &retval, member, value);
zval_ptr_dtor(member);
zval_ptr_dtor(value);
if (Z_TYPE(retval) != IS_UNDEF) {
result = i_zend_is_true(&retval TSRMLS_CC) ? SUCCESS : FAILURE;
zval_ptr_dtor(&retval);
return result;
} else {
return FAILURE;
}
}
/* }}} */
static void zend_std_call_unsetter(zval *object, zval *member TSRMLS_DC) /* {{{ */
{
zend_class_entry *ce = Z_OBJCE_P(object);
/* __unset handler is called with one argument:
property name
*/
if (Z_REFCOUNTED_P(member)) Z_ADDREF_P(member);
zend_call_method_with_1_params(object, ce, &ce->__unset, ZEND_UNSET_FUNC_NAME, NULL, member);
zval_ptr_dtor(member);
}
/* }}} */
static void zend_std_call_issetter(zval *object, zval *member, zval *retval TSRMLS_DC) /* {{{ */
{
zend_class_entry *ce = Z_OBJCE_P(object);
/* __isset handler is called with one argument:
property name
it should return whether the property is set or not
*/
if (Z_REFCOUNTED_P(member)) Z_ADDREF_P(member);
zend_call_method_with_1_params(object, ce, &ce->__isset, ZEND_ISSET_FUNC_NAME, retval, member);
zval_ptr_dtor(member);
}
/* }}} */
static zend_always_inline int zend_verify_property_access(zend_property_info *property_info, zend_class_entry *ce TSRMLS_DC) /* {{{ */
{
switch (property_info->flags & ZEND_ACC_PPP_MASK) {
case ZEND_ACC_PUBLIC:
return 1;
case ZEND_ACC_PROTECTED:
return zend_check_protected(property_info->ce, EG(scope));
case ZEND_ACC_PRIVATE:
if ((ce==EG(scope) || property_info->ce == EG(scope)) && EG(scope)) {
return 1;
} else {
return 0;
}
break;
}
return 0;
}
/* }}} */
static zend_always_inline zend_bool is_derived_class(zend_class_entry *child_class, zend_class_entry *parent_class) /* {{{ */
{
child_class = child_class->parent;
while (child_class) {
if (child_class == parent_class) {
return 1;
}
child_class = child_class->parent;
}
return 0;
}
/* }}} */
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) /* {{{ */
{
zend_property_info *property_info;
zend_property_info *scope_property_info;
zend_bool denied_access = 0;
if (cache_slot && EXPECTED(ce == CACHED_PTR_EX(cache_slot))) {
property_info = CACHED_PTR_EX(cache_slot + 1);
if (UNEXPECTED(!property_info)) {
EG(std_property_info).flags = ZEND_ACC_PUBLIC;
EG(std_property_info).name = member;
EG(std_property_info).ce = ce;
EG(std_property_info).offset = -1;
property_info = &EG(std_property_info);
}
return property_info;
}
if (UNEXPECTED(member->val[0] == '\0')) {
if (!silent) {
if (member->len == 0) {
zend_error_noreturn(E_ERROR, "Cannot access empty property");
} else {
zend_error_noreturn(E_ERROR, "Cannot access property started with '\\0'");
}
}
return NULL;
}
property_info = NULL;
if ((property_info = zend_hash_find_ptr(&ce->properties_info, member)) != NULL) {
if (UNEXPECTED((property_info->flags & ZEND_ACC_SHADOW) != 0)) {
/* if it's a shadow - go to access it's private */
property_info = NULL;
} else {
if (EXPECTED(zend_verify_property_access(property_info, ce TSRMLS_CC) != 0)) {
if (EXPECTED((property_info->flags & ZEND_ACC_CHANGED) != 0)
&& EXPECTED(!(property_info->flags & ZEND_ACC_PRIVATE))) {
/* We still need to make sure that we're not in a context
* where the right property is a different 'statically linked' private
* continue checking below...
*/
} else {
if (UNEXPECTED((property_info->flags & ZEND_ACC_STATIC) != 0) && !silent) {
zend_error(E_STRICT, "Accessing static property %s::$%s as non static", ce->name->val, member->val);
}
if (cache_slot) {
CACHE_POLYMORPHIC_PTR_EX(cache_slot, ce, property_info);
}
return property_info;
}
} else {
/* Try to look in the scope instead */
denied_access = 1;
}
}
}
if (EG(scope) != ce
&& EG(scope)
&& is_derived_class(ce, EG(scope))
&& (scope_property_info = zend_hash_find_ptr(&EG(scope)->properties_info, member)) != NULL
&& scope_property_info->flags & ZEND_ACC_PRIVATE) {
if (cache_slot) {
CACHE_POLYMORPHIC_PTR_EX(cache_slot, ce, scope_property_info);
}
return scope_property_info;
} else if (property_info) {
if (UNEXPECTED(denied_access != 0)) {
/* Information was available, but we were denied access. Error out. */
if (!silent) {
zend_error_noreturn(E_ERROR, "Cannot access %s property %s::$%s", zend_visibility_string(property_info->flags), ce->name->val, member->val);
}
return NULL;
} else {
/* fall through, return property_info... */
if (cache_slot) {
CACHE_POLYMORPHIC_PTR_EX(cache_slot, ce, property_info);
}
}
} else {
if (cache_slot) {
CACHE_POLYMORPHIC_PTR_EX(cache_slot, ce, NULL);
}
EG(std_property_info).flags = ZEND_ACC_PUBLIC;
EG(std_property_info).name = member;
EG(std_property_info).ce = ce;
EG(std_property_info).offset = -1;
property_info = &EG(std_property_info);
}
return property_info;
}
/* }}} */
ZEND_API struct _zend_property_info *zend_get_property_info(zend_class_entry *ce, zval *member, int silent TSRMLS_DC) /* {{{ */
{
return zend_get_property_info_quick(ce, Z_STR_P(member), silent, NULL TSRMLS_CC);
}
/* }}} */
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;
int prop_name_len;
if (prop_info_name->val[0] == 0) {
zend_unmangle_property_name_ex(prop_info_name->val, prop_info_name->len, &class_name, &prop_name, &prop_name_len);
member = STR_INIT(prop_name, prop_name_len, 0);
} else {
member = STR_COPY(prop_info_name);
}
property_info = zend_get_property_info_quick(zobj->ce, member, 1, NULL TSRMLS_CC);
STR_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 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;
zend_unmangle_property_name(property_info->name->val, property_info->name->len, &class_name, &prop_name);
if (class_name) {
/* use unmangled name for protected properties */
str = info.name = STR_INIT(prop_name, strlen(prop_name), 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) {
STR_RELEASE(str);
}
return &Z_LVAL_P(guard);
}
ZVAL_LONG(&stub, 0);
guard = zend_hash_add_new(zobj->guards, property_info->name, &stub);
if (str) {
STR_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_DUP(&tmp_member, member);
convert_to_string(&tmp_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) {
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_DUP(&tmp_member, member);
convert_to_string(&tmp_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? */
ZVAL_COPY_VALUE(Z_REFVAL_P(variable_ptr), value);
if (Z_REFCOUNTED_P(value) && Z_REFCOUNT_P(value) > 0) {
zval_copy_ctor(Z_REFVAL_P(variable_ptr));
}
zval_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) {
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)) {
write_std_property:
/* if we assign referenced variable, we should separate it */
if (Z_REFCOUNTED_P(value)) {
if (Z_ISREF_P(value)) {
zval tmp;
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;
long *guard;
zobj = Z_OBJ_P(object);
ZVAL_UNDEF(&tmp_member);
if (UNEXPECTED(Z_TYPE_P(member) != IS_STRING)) {
ZVAL_DUP(&tmp_member, member);
convert_to_string(&tmp_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))) {
/* we don't have access controls - will just add it */
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));
}
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);
}
} 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_DUP(&tmp_member, member);
convert_to_string(&tmp_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) {
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 *)EG(current_execute_data)->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(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, 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 = STR_INIT(method_name->val, strlen(method_name->val), 0);
} else {
call_user_call->function_name = STR_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->handlers->get_class_entry(zobj TSRMLS_CC), 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 *)EG(current_execute_data)->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(func);
}
/* }}} */
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 = STR_INIT(method_name->val, strlen(method_name->val), 0);
} else {
callstatic_user_call->function_name = STR_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 = STR_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)) {
STR_FREE(lc_function_name);
}
if (ce->__call &&
Z_OBJ(EG(This)) &&
Z_OBJ_HT(EG(This))->get_class_entry &&
instanceof_function(Z_OBJCE(EG(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)) {
STR_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_DUP(&tmp_member, member);
convert_to_string(&tmp_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:
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) {
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_class_entry *zend_std_object_get_class(const zend_object *object TSRMLS_DC) /* {{{ */
{
return object->ce;
}
/* }}} */
zend_string* zend_std_object_get_class_name(const zend_object *zobj, int parent TSRMLS_DC) /* {{{ */
{
zend_class_entry *ce;
if (parent) {
if (!zobj->ce->parent) {
return NULL;
}
ce = zobj->ce->parent;
} else {
ce = zobj->ce;
}
return STR_COPY(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, /* 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 */
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:
*/
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