php-src/Zend/zend_object_handlers.c

984 lines
29 KiB
C

/*
+----------------------------------------------------------------------+
| Zend Engine |
+----------------------------------------------------------------------+
| Copyright (c) 1998-2004 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"
#define DEBUG_OBJECT_HANDLERS 0
#define Z_OBJ_P(zval_p) zend_objects_get_address(zval_p TSRMLS_CC)
/*
__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 these objects 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.
*/
static HashTable *zend_std_get_properties(zval *object TSRMLS_DC)
{
zend_object *zobj;
zobj = Z_OBJ_P(object);
return zobj->properties;
}
static zval *zend_std_call_getter(zval *object, zval *member TSRMLS_DC)
{
zval **call_args[1];
zval *retval = NULL;
zval __get_name;
int call_result;
/* __get handler is called with two arguments:
property name
return value for the object (by reference)
it should return whether the call was successfull or not
*/
INIT_PZVAL(&__get_name);
ZVAL_STRINGL(&__get_name, ZEND_GET_FUNC_NAME, sizeof(ZEND_GET_FUNC_NAME)-1, 0);
call_args[0] = &member;
/* go call the __get handler */
call_result = call_user_function_ex(NULL,
&object,
&__get_name,
&retval,
1, call_args,
0, NULL TSRMLS_CC);
/*
call_result is if call_user_function gone OK.
retval returns the value that is received
*/
if (call_result == FAILURE) {
zend_error(E_ERROR, "Could not call __get handler for class %s", Z_OBJCE_P(object)->name);
return NULL;
}
if (retval) {
retval->refcount--;
}
return retval;
}
static int zend_std_call_setter(zval *object, zval *member, zval *value TSRMLS_DC)
{
zval **call_args[2];
zval *retval = NULL;
zval __set_name;
int call_result;
int ret;
/* __set handler is called with two arguments:
property name
value to be set
it should return whether the call was successfull or not
*/
INIT_PZVAL(&__set_name);
ZVAL_STRINGL(&__set_name, ZEND_SET_FUNC_NAME, sizeof(ZEND_SET_FUNC_NAME)-1, 0);
call_args[0] = &member;
value->refcount++;
call_args[1] = &value;
/* go call the __set handler */
call_result = call_user_function_ex(NULL,
&object,
&__set_name,
&retval,
2, call_args,
0, NULL TSRMLS_CC);
/*
call_result is if call_user_function gone OK.
retval shows if __get method went OK.
*/
if (call_result == FAILURE) {
zend_error(E_ERROR, "Could not call __set handler for class %s", Z_OBJCE_P(object)->name);
return FAILURE;
}
zval_ptr_dtor(&value);
if (retval && zend_is_true(retval)) {
ret = SUCCESS;
} else {
ret = FAILURE;
}
if (retval) {
zval_ptr_dtor(&retval);
}
return ret;
}
static 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:
while (ce) {
if (ce==EG(scope)) {
return 1;
}
ce = ce->parent;
}
return 0;
case ZEND_ACC_PRIVATE:
if (ce==EG(scope) && EG(scope)) {
return 1;
} else {
return 0;
}
break;
}
return 0;
}
static 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 inline zend_property_info *zend_get_property_info(zend_object *zobj, zval *member, int silent TSRMLS_DC)
{
zend_property_info *property_info = NULL;
zend_property_info *scope_property_info;
zend_bool denied_access = 0;
ulong h = zend_get_hash_value(Z_STRVAL_P(member), Z_STRLEN_P(member)+1);
if (zend_hash_quick_find(&zobj->ce->properties_info, Z_STRVAL_P(member), Z_STRLEN_P(member)+1, h, (void **) &property_info)==SUCCESS) {
if (zend_verify_property_access(property_info, zobj->ce TSRMLS_CC)) {
if (property_info->flags & ZEND_ACC_CHANGED
&& !(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 {
return property_info;
}
} else {
/* Try to look in the scope instead */
denied_access = 1;
}
}
if (EG(scope) != zobj->ce
&& is_derived_class(zobj->ce, EG(scope))
&& EG(scope)
&& zend_hash_quick_find(&EG(scope)->properties_info, Z_STRVAL_P(member), Z_STRLEN_P(member)+1, h, (void **) &scope_property_info)==SUCCESS
&& scope_property_info->flags & ZEND_ACC_PRIVATE) {
return scope_property_info;
} else if (property_info) {
if (denied_access) {
/* Information was available, but we were denied access. Error out. */
if (silent) {
return NULL;
}
zend_error(E_ERROR, "Cannot access %s property %s::$%s", zend_visibility_string(property_info->flags), zobj->ce->name, Z_STRVAL_P(member));
} else {
/* fall through, return property_info... */
}
} else {
EG(std_property_info).flags = ZEND_ACC_PUBLIC;
EG(std_property_info).name = Z_STRVAL_P(member);
EG(std_property_info).name_length = Z_STRLEN_P(member);
EG(std_property_info).h = zend_get_hash_value(EG(std_property_info).name, EG(std_property_info).name_length+1);
property_info = &EG(std_property_info);
}
return property_info;
}
ZEND_API int zend_check_property_access(zend_object *zobj, char *prop_info_name TSRMLS_DC)
{
zend_property_info *property_info;
char *class_name, *prop_name;
zval member;
zend_unmangle_property_name(prop_info_name, &class_name, &prop_name);
ZVAL_STRING(&member, prop_name, 0);
property_info = zend_get_property_info(zobj, &member, 1 TSRMLS_CC);
if (!property_info) {
return FAILURE;
}
if (prop_info_name[0] == '\0' && prop_info_name[1] != '*' && !(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;
}
return zend_verify_property_access(property_info, zobj->ce TSRMLS_CC) ? SUCCESS : FAILURE;
}
zval *zend_std_read_property(zval *object, zval *member, int type TSRMLS_DC)
{
zend_object *zobj;
zval tmp_member;
zval **retval;
zval *rv = NULL;
zend_property_info *property_info;
int silent;
silent = (type == BP_VAR_IS);
zobj = Z_OBJ_P(object);
if (member->type != IS_STRING) {
tmp_member = *member;
zval_copy_ctor(&tmp_member);
convert_to_string(&tmp_member);
member = &tmp_member;
}
#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(zobj, member, 0 TSRMLS_CC);
if (zend_hash_quick_find(zobj->properties, property_info->name, property_info->name_length+1, property_info->h, (void **) &retval) == FAILURE) {
if (zobj->ce->__get && !zobj->in_get) {
/* have getter - try with it! */
zobj->in_get = 1; /* prevent circular getting */
rv = zend_std_call_getter(object, member TSRMLS_CC);
zobj->in_get = 0;
if (rv) {
retval = &rv;
} else {
retval = &EG(uninitialized_zval_ptr);
}
} else {
if (!silent) {
zend_error(E_NOTICE,"Undefined property: %s::$%s", zobj->ce->name, Z_STRVAL_P(member));
}
retval = &EG(uninitialized_zval_ptr);
}
}
if (member == &tmp_member) {
zval_dtor(member);
}
return *retval;
}
static void zend_std_write_property(zval *object, zval *member, zval *value TSRMLS_DC)
{
zend_object *zobj;
zval tmp_member;
zval **variable_ptr;
int setter_done = 0;
zend_property_info *property_info;
zobj = Z_OBJ_P(object);
if (member->type != IS_STRING) {
tmp_member = *member;
zval_copy_ctor(&tmp_member);
convert_to_string(&tmp_member);
member = &tmp_member;
}
property_info = zend_get_property_info(zobj, member, 0 TSRMLS_CC);
if (zend_hash_quick_find(zobj->properties, property_info->name, property_info->name_length+1, property_info->h, (void **) &variable_ptr) == SUCCESS) {
if (*variable_ptr == value) {
/* if we already have this value there, we don't actually need to do anything */
setter_done = 1;
} else {
/* 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_dtor(*variable_ptr); /* old value should be destroyed */
/* To check: can't *variable_ptr be some system variable like error_zval here? */
(*variable_ptr)->type = value->type;
(*variable_ptr)->value = value->value;
if (value->refcount>0) {
zval_copy_ctor(*variable_ptr);
}
setter_done = 1;
}
}
} else {
if (zobj->ce->__set && !zobj->in_set) {
zobj->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. */
}
setter_done = 1;
zobj->in_set = 0;
}
}
if (!setter_done) {
zval **foo;
/* if we assign referenced variable, we should separate it */
value->refcount++;
if (PZVAL_IS_REF(value)) {
SEPARATE_ZVAL(&value);
}
zend_hash_quick_update(zobj->properties, property_info->name, property_info->name_length+1, property_info->h, &value, sizeof(zval *), (void **) &foo);
}
if (member == &tmp_member) {
zval_dtor(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 (instanceof_function_ex(ce, zend_ce_arrayaccess, 1 TSRMLS_CC)) {
zend_call_method_with_1_params(&object, ce, NULL, "offsetget", &retval, offset);
if (!retval) {
if (!EG(exception)) {
zend_error(E_ERROR, "Undefined offset for object of type %s used as array", ce->name);
}
return 0;
}
/* Undo PZVAL_LOCK() */
retval->refcount--;
return retval;
} else {
zend_error(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);
zval tmp;
if (instanceof_function_ex(ce, zend_ce_arrayaccess, 1 TSRMLS_CC)) {
if (!offset) {
INIT_ZVAL(tmp);
offset = &tmp;
}
zend_call_method_with_2_params(&object, ce, NULL, "offsetset", NULL, offset, value);
} else {
zend_error(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 (instanceof_function_ex(ce, zend_ce_arrayaccess, 1 TSRMLS_CC)) {
zend_call_method_with_1_params(&object, ce, NULL, "offsetexists", &retval, offset);
result = i_zend_is_true(retval);
zval_ptr_dtor(&retval);
return result;
} else {
zend_error(E_ERROR, "Cannot use object of type %s as array", ce->name);
return 0;
}
}
static zval **zend_std_get_property_ptr_ptr(zval *object, zval *member TSRMLS_DC)
{
zend_object *zobj;
zval tmp_member;
zval **retval;
zend_property_info *property_info;
zobj = Z_OBJ_P(object);
if (member->type != IS_STRING) {
tmp_member = *member;
zval_copy_ctor(&tmp_member);
convert_to_string(&tmp_member);
member = &tmp_member;
}
#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(zobj, member, 0 TSRMLS_CC);
if (zend_hash_quick_find(zobj->properties, property_info->name, property_info->name_length+1, property_info->h, (void **) &retval) == FAILURE) {
zval *new_zval;
if (!zobj->ce->__get && !zobj->ce->__set) {
/* we don't have access controls - will just add it */
new_zval = &EG(uninitialized_zval);
/* zend_error(E_NOTICE, "Undefined property: %s", Z_STRVAL_P(member)); */
new_zval->refcount++;
zend_hash_quick_update(zobj->properties, property_info->name, property_info->name_length+1, property_info->h, &new_zval, sizeof(zval *), (void **) &retval);
} else {
/* we do have getter - fail and let it try again with usual get/set */
retval = NULL;
}
}
if (member == &tmp_member) {
zval_dtor(member);
}
return retval;
}
static void zend_std_unset_property(zval *object, zval *member TSRMLS_DC)
{
zend_object *zobj;
zval tmp_member;
zend_property_info *property_info;
zobj = Z_OBJ_P(object);
if (member->type != IS_STRING) {
tmp_member = *member;
zval_copy_ctor(&tmp_member);
convert_to_string(&tmp_member);
member = &tmp_member;
}
property_info = zend_get_property_info(zobj, member, 0 TSRMLS_CC);
zend_hash_del(zobj->properties, property_info->name, property_info->name_length+1);
if (member == &tmp_member) {
zval_dtor(member);
}
}
static void zend_std_unset_dimension(zval *object, zval *offset TSRMLS_DC)
{
zend_class_entry *ce = Z_OBJCE_P(object);
zval *retval;
if (instanceof_function_ex(ce, zend_ce_arrayaccess, 1 TSRMLS_CC)) {
zend_call_method_with_1_params(&object, ce, NULL, "offsetunset", &retval, offset);
zval_ptr_dtor(&retval);
} else {
zend_error(E_ERROR, "Cannot use object of type %s as array", ce->name);
}
}
ZEND_API void zend_std_call_user_call(INTERNAL_FUNCTION_PARAMETERS)
{
zval ***args;
zend_internal_function *func = (zend_internal_function *)EG(function_state_ptr)->function;
zval method_name, method_args, __call_name;
zval *method_name_ptr, *method_args_ptr;
zval **call_args[2];
zval *method_result_ptr = NULL;
int i, call_result;
args = (zval ***)emalloc(ZEND_NUM_ARGS() * sizeof(zval **));
if (zend_get_parameters_array_ex(ZEND_NUM_ARGS(), args) == FAILURE) {
efree(args);
zend_error(E_ERROR, "Cannot get arguments for __call");
RETURN_FALSE;
}
method_name_ptr = &method_name;
INIT_PZVAL(method_name_ptr);
ZVAL_STRING(method_name_ptr, func->function_name, 0); /* no dup - it's a copy */
method_args_ptr = &method_args;
INIT_PZVAL(method_args_ptr);
array_init(method_args_ptr);
for(i=0; i<ZEND_NUM_ARGS(); i++) {
zval_add_ref(args[i]);
add_next_index_zval(method_args_ptr, *args[i]);
}
efree(args);
INIT_PZVAL(&__call_name);
ZVAL_STRINGL(&__call_name, ZEND_CALL_FUNC_NAME, sizeof(ZEND_CALL_FUNC_NAME)-1, 0);
/* __call handler is called with two arguments:
method name
array of method parameters
*/
call_args[0] = &method_name_ptr;
call_args[1] = &method_args_ptr;
/* go call the __call handler */
call_result = call_user_function_ex(NULL,
&this_ptr,
&__call_name,
&method_result_ptr,
2, call_args,
0, NULL TSRMLS_CC);
/* call_result is if call_user_function gone OK.
method_result_ptr is the true result of the called method
*/
if (method_result_ptr) {
*return_value = *method_result_ptr;
zval_copy_ctor(return_value);
zval_ptr_dtor(&method_result_ptr);
}
if (call_result == FAILURE) {
zend_error(E_ERROR, "Could not call __call handler for class %s", Z_OBJCE_P(this_ptr)->name);
}
/* now destruct all auxiliaries */
zval_dtor(method_args_ptr);
zval_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.
*/
inline zend_function *zend_check_private(zend_function *fbc, zend_class_entry *ce, int fn_flags, char *function_name_strval, int function_name_strlen 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_find(&ce->function_table, function_name_strval, function_name_strlen+1, (void **) &fbc)==SUCCESS
&& fbc->op_array.fn_flags & ZEND_ACC_PRIVATE
&& fbc->common.scope == EG(scope)) {
return fbc;
}
break;
}
ce = ce->parent;
}
return 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 union _zend_function *zend_std_get_method(zval *object, char *method_name, int method_len TSRMLS_DC)
{
zend_object *zobj;
zend_function *fbc;
char *lc_method_name;
lc_method_name = do_alloca(method_len+1);
/* Create a zend_copy_str_tolower(dest, src, src_length); */
zend_str_tolower_copy(lc_method_name, method_name, method_len);
zobj = Z_OBJ_P(object);
if (zend_hash_find(&zobj->ce->function_table, lc_method_name, method_len+1, (void **)&fbc) == FAILURE) {
if (zobj->ce->__call) {
zend_internal_function *call_user_call = emalloc(sizeof(zend_internal_function));
call_user_call->type = ZEND_INTERNAL_FUNCTION;
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 = zobj->ce;
call_user_call->fn_flags = 0;
call_user_call->function_name = estrndup(method_name, method_len);
free_alloca(lc_method_name);
return (union _zend_function *)call_user_call;
} else {
return NULL;
}
}
/* Check access level */
if (fbc->op_array.fn_flags & ZEND_ACC_PUBLIC) {
/* Ensure that we haven't overridden a private function and end up calling
* the overriding public function...
*/
if (EG(scope) && fbc->op_array.fn_flags & ZEND_ACC_CHANGED) {
zend_function *priv_fbc;
if (zend_hash_find(&EG(scope)->function_table, lc_method_name, method_len+1, (void **) &priv_fbc)==SUCCESS
&& priv_fbc->common.fn_flags & ZEND_ACC_PRIVATE) {
fbc = priv_fbc;
}
}
} 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(fbc, object->value.obj.handlers->get_class_entry(object TSRMLS_CC), fbc->common.fn_flags, lc_method_name, method_len TSRMLS_CC);
if (!updated_fbc) {
zend_error(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 : "");
}
fbc = updated_fbc;
} 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 (!zend_check_protected(fbc->common.scope, EG(scope))) {
zend_error(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 : "");
}
}
free_alloca(lc_method_name);
return fbc;
}
/* 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, char *function_name_strval, int function_name_strlen TSRMLS_DC)
{
zend_function *fbc;
if (zend_hash_find(&ce->function_table, function_name_strval, function_name_strlen+1, (void **) &fbc)==FAILURE) {
char *class_name = ce->name;
if (!class_name) {
class_name = "";
}
zend_error(E_ERROR, "Call to undefined method %s::%s()", class_name, function_name_strval);
}
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(fbc, EG(scope), fbc->common.fn_flags, function_name_strval, function_name_strlen TSRMLS_CC);
if (!updated_fbc) {
zend_error(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 : "");
}
fbc = updated_fbc;
} 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 (!zend_check_protected(EG(scope), fbc->common.scope)) {
zend_error(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 : "");
}
}
return fbc;
}
ZEND_API zval **zend_std_get_static_property(zend_class_entry *ce, char *property_name, int property_name_len, zend_bool silent TSRMLS_DC)
{
zval **retval = NULL;
zend_class_entry *tmp_ce = ce;
zend_property_info *property_info;
zend_property_info std_property_info;
if (zend_hash_find(&ce->properties_info, property_name, property_name_len+1, (void **) &property_info)==FAILURE) {
std_property_info.flags = ZEND_ACC_PUBLIC;
std_property_info.name = property_name;
std_property_info.name_length = property_name_len;
std_property_info.h = zend_get_hash_value(std_property_info.name, std_property_info.name_length+1);
property_info = &std_property_info;
}
#if 1&&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 (!zend_verify_property_access(property_info, ce TSRMLS_CC)) {
zend_error(E_ERROR, "Cannot access %s property %s::$%s", zend_visibility_string(property_info->flags), ce->name, property_name);
}
zend_hash_quick_find(tmp_ce->static_members, property_info->name, property_info->name_length+1, property_info->h, (void **) &retval);
if (!retval) {
if (silent) {
return NULL;
} else {
zend_error(E_ERROR, "Access to undeclared static property: %s::$%s", ce->name, property_name);
}
}
zval_update_constant(retval, (void *) 1 TSRMLS_CC);
return retval;
}
ZEND_API zend_bool zend_std_unset_static_property(zend_class_entry *ce, char *property_name, int property_name_len TSRMLS_DC)
{
zend_error(E_ERROR, "Attempt to unset static property %s::$%s", ce->name, property_name);
return 0;
}
static 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 (object->value.obj.handlers->get_class_entry(object TSRMLS_CC) != EG(scope)) {
zend_error(E_ERROR, "Call to private %s::%s() from context '%s'", constructor->common.scope->name, constructor->common.function_name, EG(scope) ? EG(scope)->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.
*/
if (!zend_check_protected(constructor->common.scope, EG(scope))) {
zend_error(E_ERROR, "Call to protected %s::%s() from context '%s'", constructor->common.scope->name, constructor->common.function_name, EG(scope) ? EG(scope)->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 */
}
return zend_compare_symbol_tables_i(zobj1->properties, zobj2->properties TSRMLS_CC);
}
static int zend_std_has_property(zval *object, zval *member, int check_empty TSRMLS_DC)
{
zend_object *zobj;
int result;
zval **value;
zval tmp_member;
zend_property_info *property_info;
zobj = Z_OBJ_P(object);
if (member->type != IS_STRING) {
tmp_member = *member;
zval_copy_ctor(&tmp_member);
convert_to_string(&tmp_member);
member = &tmp_member;
}
#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(zobj, member, 0 TSRMLS_CC);
if (zend_hash_find(zobj->properties, property_info->name, property_info->name_length+1, (void **) &value) == SUCCESS) {
if (check_empty) {
result = zend_is_true(*value);
} else {
result = (Z_TYPE_PP(value) != IS_NULL);
}
} else {
result = 0;
}
if (member == &tmp_member) {
zval_dtor(member);
}
return result;
}
zend_class_entry *zend_std_object_get_class(zval *object TSRMLS_DC)
{
zend_object *zobj;
zobj = Z_OBJ_P(object);
return zobj->ce;
}
int zend_std_object_get_class_name(zval *object, 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, int should_free TSRMLS_DC)
{
zval fname, *retval;
switch (type) {
case IS_STRING:
ZVAL_STRING(&fname, "__tostring", 0);
if (call_user_function_ex(NULL, &readobj, &fname, &retval, 0, NULL, 0, NULL TSRMLS_CC) == SUCCESS) {
if (retval) {
if (Z_TYPE_P(retval) != IS_STRING) {
zend_error(E_ERROR, "Method %s::__toString() must return a string value", Z_OBJCE_P(readobj)->name);
}
} else {
MAKE_STD_ZVAL(retval);
ZVAL_STRINGL(retval, empty_string, 0, 0);
}
*writeobj = *retval;
zval_copy_ctor(writeobj);
INIT_PZVAL(writeobj);
zval_ptr_dtor(&retval);
return SUCCESS;
}
break;
default:
break;
}
return FAILURE;
}
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 */
NULL, /* cast_object */
};
/*
* Local variables:
* tab-width: 4
* c-basic-offset: 4
* indent-tabs-mode: t
* End:
*/