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php-src/Zend/zend_execute.c
Nikita Popov 14f599ea7d Use zend_long for resource ID 
Currently, resource IDs are limited to 32-bits. As resource IDs
are not reused, this means that resource ID overflow for
long-running processes is very possible.

This patch switches resource IDs to use zend_long instead, which
means that on 64-bit systems, 64-bit resource IDs will be used.
This makes resource ID overflow practically impossible.

The tradeoff is an 8 byte increase in zend_resource size.

Closes GH-7436.
2021-08-31 14:58:59 +02:00

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/*
+----------------------------------------------------------------------+
| Zend Engine |
+----------------------------------------------------------------------+
| Copyright (c) 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@php.net> |
| Zeev Suraski <zeev@php.net> |
| Dmitry Stogov <dmitry@php.net> |
+----------------------------------------------------------------------+
*/
#define ZEND_INTENSIVE_DEBUGGING 0
#include <stdio.h>
#include <signal.h>
#include "zend.h"
#include "zend_compile.h"
#include "zend_execute.h"
#include "zend_API.h"
#include "zend_ptr_stack.h"
#include "zend_constants.h"
#include "zend_extensions.h"
#include "zend_ini.h"
#include "zend_exceptions.h"
#include "zend_interfaces.h"
#include "zend_closures.h"
#include "zend_generators.h"
#include "zend_vm.h"
#include "zend_dtrace.h"
#include "zend_inheritance.h"
#include "zend_type_info.h"
#include "zend_smart_str.h"
#include "zend_observer.h"
#include "zend_system_id.h"
#include "Optimizer/zend_func_info.h"
/* Virtual current working directory support */
#include "zend_virtual_cwd.h"
#ifdef HAVE_GCC_GLOBAL_REGS
# if defined(__GNUC__) && ZEND_GCC_VERSION >= 4008 && defined(i386)
# define ZEND_VM_FP_GLOBAL_REG "%esi"
# define ZEND_VM_IP_GLOBAL_REG "%edi"
# elif defined(__GNUC__) && ZEND_GCC_VERSION >= 4008 && defined(__x86_64__)
# define ZEND_VM_FP_GLOBAL_REG "%r14"
# define ZEND_VM_IP_GLOBAL_REG "%r15"
# elif defined(__GNUC__) && ZEND_GCC_VERSION >= 4008 && defined(__powerpc64__)
# define ZEND_VM_FP_GLOBAL_REG "r14"
# define ZEND_VM_IP_GLOBAL_REG "r15"
# elif defined(__IBMC__) && ZEND_GCC_VERSION >= 4002 && defined(__powerpc64__)
# define ZEND_VM_FP_GLOBAL_REG "r14"
# define ZEND_VM_IP_GLOBAL_REG "r15"
# elif defined(__GNUC__) && ZEND_GCC_VERSION >= 4008 && defined(__aarch64__)
# define ZEND_VM_FP_GLOBAL_REG "x27"
# define ZEND_VM_IP_GLOBAL_REG "x28"
# endif
#endif
#if defined(ZEND_VM_FP_GLOBAL_REG) && ((ZEND_VM_KIND == ZEND_VM_KIND_CALL) || (ZEND_VM_KIND == ZEND_VM_KIND_HYBRID))
# pragma GCC diagnostic ignored "-Wvolatile-register-var"
register zend_execute_data* volatile execute_data __asm__(ZEND_VM_FP_GLOBAL_REG);
# pragma GCC diagnostic warning "-Wvolatile-register-var"
#endif
#if defined(ZEND_VM_FP_GLOBAL_REG) && ((ZEND_VM_KIND == ZEND_VM_KIND_CALL) || (ZEND_VM_KIND == ZEND_VM_KIND_HYBRID))
# define EXECUTE_DATA_D void
# define EXECUTE_DATA_C
# define EXECUTE_DATA_DC
# define EXECUTE_DATA_CC
# define NO_EXECUTE_DATA_CC
#else
# define EXECUTE_DATA_D zend_execute_data* execute_data
# define EXECUTE_DATA_C execute_data
# define EXECUTE_DATA_DC , EXECUTE_DATA_D
# define EXECUTE_DATA_CC , EXECUTE_DATA_C
# define NO_EXECUTE_DATA_CC , NULL
#endif
#if defined(ZEND_VM_FP_GLOBAL_REG) && ((ZEND_VM_KIND == ZEND_VM_KIND_CALL) || (ZEND_VM_KIND == ZEND_VM_KIND_HYBRID))
# define OPLINE_D void
# define OPLINE_C
# define OPLINE_DC
# define OPLINE_CC
#else
# define OPLINE_D const zend_op* opline
# define OPLINE_C opline
# define OPLINE_DC , OPLINE_D
# define OPLINE_CC , OPLINE_C
#endif
#if defined(ZEND_VM_IP_GLOBAL_REG) && ((ZEND_VM_KIND == ZEND_VM_KIND_CALL) || (ZEND_VM_KIND == ZEND_VM_KIND_HYBRID))
# pragma GCC diagnostic ignored "-Wvolatile-register-var"
register const zend_op* volatile opline __asm__(ZEND_VM_IP_GLOBAL_REG);
# pragma GCC diagnostic warning "-Wvolatile-register-var"
#else
#endif
#define _CONST_CODE 0
#define _TMP_CODE 1
#define _VAR_CODE 2
#define _UNUSED_CODE 3
#define _CV_CODE 4
typedef int (ZEND_FASTCALL *incdec_t)(zval *);
#define get_zval_ptr(op_type, node, type) _get_zval_ptr(op_type, node, type EXECUTE_DATA_CC OPLINE_CC)
#define get_zval_ptr_deref(op_type, node, type) _get_zval_ptr_deref(op_type, node, type EXECUTE_DATA_CC OPLINE_CC)
#define get_zval_ptr_undef(op_type, node, type) _get_zval_ptr_undef(op_type, node, type EXECUTE_DATA_CC OPLINE_CC)
#define get_op_data_zval_ptr_r(op_type, node) _get_op_data_zval_ptr_r(op_type, node EXECUTE_DATA_CC OPLINE_CC)
#define get_op_data_zval_ptr_deref_r(op_type, node) _get_op_data_zval_ptr_deref_r(op_type, node EXECUTE_DATA_CC OPLINE_CC)
#define get_zval_ptr_ptr(op_type, node, type) _get_zval_ptr_ptr(op_type, node, type EXECUTE_DATA_CC)
#define get_zval_ptr_ptr_undef(op_type, node, type) _get_zval_ptr_ptr(op_type, node, type EXECUTE_DATA_CC)
#define get_obj_zval_ptr(op_type, node, type) _get_obj_zval_ptr(op_type, node, type EXECUTE_DATA_CC OPLINE_CC)
#define get_obj_zval_ptr_undef(op_type, node, type) _get_obj_zval_ptr_undef(op_type, node, type EXECUTE_DATA_CC OPLINE_CC)
#define get_obj_zval_ptr_ptr(op_type, node, type) _get_obj_zval_ptr_ptr(op_type, node, type EXECUTE_DATA_CC)
#define RETURN_VALUE_USED(opline) ((opline)->result_type != IS_UNUSED)
static ZEND_FUNCTION(pass)
{
}
ZEND_BEGIN_ARG_INFO_EX(zend_pass_function_arg_info, 0, 0, 0)
ZEND_END_ARG_INFO()
ZEND_API const zend_internal_function zend_pass_function = {
ZEND_INTERNAL_FUNCTION, /* type */
{0, 0, 0}, /* arg_flags */
0, /* fn_flags */
NULL, /* name */
NULL, /* scope */
NULL, /* prototype */
0, /* num_args */
0, /* required_num_args */
(zend_internal_arg_info *) zend_pass_function_arg_info + 1, /* arg_info */
NULL, /* attributes */
ZEND_FN(pass), /* handler */
NULL, /* module */
{NULL,NULL,NULL,NULL} /* reserved */
};
#define FREE_VAR_PTR_AND_EXTRACT_RESULT_IF_NECESSARY(free_var) do { \
zval *__container_to_free = EX_VAR(free_var); \
if (UNEXPECTED(Z_REFCOUNTED_P(__container_to_free))) { \
zend_refcounted *__ref = Z_COUNTED_P(__container_to_free); \
if (UNEXPECTED(!GC_DELREF(__ref))) { \
zval *__zv = EX_VAR(opline->result.var); \
if (EXPECTED(Z_TYPE_P(__zv) == IS_INDIRECT)) { \
ZVAL_COPY(__zv, Z_INDIRECT_P(__zv)); \
} \
rc_dtor_func(__ref); \
} \
} \
} while (0)
#define FREE_OP(type, var) \
if ((type) & (IS_TMP_VAR|IS_VAR)) { \
zval_ptr_dtor_nogc(EX_VAR(var)); \
}
#define FREE_OP_VAR_PTR(type, var) \
FREE_OP(type, var)
#define CV_DEF_OF(i) (EX(func)->op_array.vars[i])
#define ZEND_VM_STACK_PAGE_SLOTS (16 * 1024) /* should be a power of 2 */
#define ZEND_VM_STACK_PAGE_SIZE (ZEND_VM_STACK_PAGE_SLOTS * sizeof(zval))
#define ZEND_VM_STACK_PAGE_ALIGNED_SIZE(size, page_size) \
(((size) + ZEND_VM_STACK_HEADER_SLOTS * sizeof(zval) \
+ ((page_size) - 1)) & ~((page_size) - 1))
ZEND_API void zend_vm_stack_init(void)
{
EG(vm_stack_page_size) = ZEND_VM_STACK_PAGE_SIZE;
EG(vm_stack) = zend_vm_stack_new_page(ZEND_VM_STACK_PAGE_SIZE, NULL);
EG(vm_stack_top) = EG(vm_stack)->top;
EG(vm_stack_end) = EG(vm_stack)->end;
}
ZEND_API void zend_vm_stack_init_ex(size_t page_size)
{
/* page_size must be a power of 2 */
ZEND_ASSERT(page_size > 0 && (page_size & (page_size - 1)) == 0);
EG(vm_stack_page_size) = page_size;
EG(vm_stack) = zend_vm_stack_new_page(page_size, NULL);
EG(vm_stack_top) = EG(vm_stack)->top;
EG(vm_stack_end) = EG(vm_stack)->end;
}
ZEND_API void zend_vm_stack_destroy(void)
{
zend_vm_stack stack = EG(vm_stack);
while (stack != NULL) {
zend_vm_stack p = stack->prev;
efree(stack);
stack = p;
}
}
ZEND_API void* zend_vm_stack_extend(size_t size)
{
zend_vm_stack stack;
void *ptr;
stack = EG(vm_stack);
stack->top = EG(vm_stack_top);
EG(vm_stack) = stack = zend_vm_stack_new_page(
EXPECTED(size < EG(vm_stack_page_size) - (ZEND_VM_STACK_HEADER_SLOTS * sizeof(zval))) ?
EG(vm_stack_page_size) : ZEND_VM_STACK_PAGE_ALIGNED_SIZE(size, EG(vm_stack_page_size)),
stack);
ptr = stack->top;
EG(vm_stack_top) = (void*)(((char*)ptr) + size);
EG(vm_stack_end) = stack->end;
return ptr;
}
ZEND_API zval* zend_get_compiled_variable_value(const zend_execute_data *execute_data, uint32_t var)
{
return EX_VAR(var);
}
static zend_always_inline zval *_get_zval_ptr_tmp(uint32_t var EXECUTE_DATA_DC)
{
zval *ret = EX_VAR(var);
ZEND_ASSERT(Z_TYPE_P(ret) != IS_REFERENCE);
return ret;
}
static zend_always_inline zval *_get_zval_ptr_var(uint32_t var EXECUTE_DATA_DC)
{
zval *ret = EX_VAR(var);
return ret;
}
static zend_always_inline zval *_get_zval_ptr_var_deref(uint32_t var EXECUTE_DATA_DC)
{
zval *ret = EX_VAR(var);
ZVAL_DEREF(ret);
return ret;
}
static zend_never_inline ZEND_COLD zval* zval_undefined_cv(uint32_t var EXECUTE_DATA_DC)
{
if (EXPECTED(EG(exception) == NULL)) {
zend_string *cv = CV_DEF_OF(EX_VAR_TO_NUM(var));
zend_error(E_WARNING, "Undefined variable $%s", ZSTR_VAL(cv));
}
return &EG(uninitialized_zval);
}
static zend_never_inline ZEND_COLD zval* ZEND_FASTCALL _zval_undefined_op1(EXECUTE_DATA_D)
{
return zval_undefined_cv(EX(opline)->op1.var EXECUTE_DATA_CC);
}
static zend_never_inline ZEND_COLD zval* ZEND_FASTCALL _zval_undefined_op2(EXECUTE_DATA_D)
{
return zval_undefined_cv(EX(opline)->op2.var EXECUTE_DATA_CC);
}
#define ZVAL_UNDEFINED_OP1() _zval_undefined_op1(EXECUTE_DATA_C)
#define ZVAL_UNDEFINED_OP2() _zval_undefined_op2(EXECUTE_DATA_C)
static zend_never_inline ZEND_COLD zval *_get_zval_cv_lookup(zval *ptr, uint32_t var, int type EXECUTE_DATA_DC)
{
switch (type) {
case BP_VAR_R:
case BP_VAR_UNSET:
ptr = zval_undefined_cv(var EXECUTE_DATA_CC);
break;
case BP_VAR_IS:
ptr = &EG(uninitialized_zval);
break;
case BP_VAR_RW:
zval_undefined_cv(var EXECUTE_DATA_CC);
ZEND_FALLTHROUGH;
case BP_VAR_W:
ZVAL_NULL(ptr);
break;
}
return ptr;
}
static zend_always_inline zval *_get_zval_ptr_cv(uint32_t var, int type EXECUTE_DATA_DC)
{
zval *ret = EX_VAR(var);
if (UNEXPECTED(Z_TYPE_P(ret) == IS_UNDEF)) {
if (type == BP_VAR_W) {
ZVAL_NULL(ret);
} else {
return _get_zval_cv_lookup(ret, var, type EXECUTE_DATA_CC);
}
}
return ret;
}
static zend_always_inline zval *_get_zval_ptr_cv_deref(uint32_t var, int type EXECUTE_DATA_DC)
{
zval *ret = EX_VAR(var);
if (UNEXPECTED(Z_TYPE_P(ret) == IS_UNDEF)) {
if (type == BP_VAR_W) {
ZVAL_NULL(ret);
return ret;
} else {
return _get_zval_cv_lookup(ret, var, type EXECUTE_DATA_CC);
}
}
ZVAL_DEREF(ret);
return ret;
}
static zend_always_inline zval *_get_zval_ptr_cv_BP_VAR_R(uint32_t var EXECUTE_DATA_DC)
{
zval *ret = EX_VAR(var);
if (UNEXPECTED(Z_TYPE_P(ret) == IS_UNDEF)) {
return zval_undefined_cv(var EXECUTE_DATA_CC);
}
return ret;
}
static zend_always_inline zval *_get_zval_ptr_cv_deref_BP_VAR_R(uint32_t var EXECUTE_DATA_DC)
{
zval *ret = EX_VAR(var);
if (UNEXPECTED(Z_TYPE_P(ret) == IS_UNDEF)) {
return zval_undefined_cv(var EXECUTE_DATA_CC);
}
ZVAL_DEREF(ret);
return ret;
}
static zend_always_inline zval *_get_zval_ptr_cv_BP_VAR_IS(uint32_t var EXECUTE_DATA_DC)
{
zval *ret = EX_VAR(var);
return ret;
}
static zend_always_inline zval *_get_zval_ptr_cv_BP_VAR_RW(uint32_t var EXECUTE_DATA_DC)
{
zval *ret = EX_VAR(var);
if (UNEXPECTED(Z_TYPE_P(ret) == IS_UNDEF)) {
zval_undefined_cv(var EXECUTE_DATA_CC);
ZVAL_NULL(ret);
return ret;
}
return ret;
}
static zend_always_inline zval *_get_zval_ptr_cv_BP_VAR_W(uint32_t var EXECUTE_DATA_DC)
{
zval *ret = EX_VAR(var);
if (Z_TYPE_P(ret) == IS_UNDEF) {
ZVAL_NULL(ret);
}
return ret;
}
static zend_always_inline zval *_get_zval_ptr(int op_type, znode_op node, int type EXECUTE_DATA_DC OPLINE_DC)
{
if (op_type & (IS_TMP_VAR|IS_VAR)) {
if (!ZEND_DEBUG || op_type == IS_VAR) {
return _get_zval_ptr_var(node.var EXECUTE_DATA_CC);
} else {
ZEND_ASSERT(op_type == IS_TMP_VAR);
return _get_zval_ptr_tmp(node.var EXECUTE_DATA_CC);
}
} else {
if (op_type == IS_CONST) {
return RT_CONSTANT(opline, node);
} else if (op_type == IS_CV) {
return _get_zval_ptr_cv(node.var, type EXECUTE_DATA_CC);
} else {
return NULL;
}
}
}
static zend_always_inline zval *_get_op_data_zval_ptr_r(int op_type, znode_op node EXECUTE_DATA_DC OPLINE_DC)
{
if (op_type & (IS_TMP_VAR|IS_VAR)) {
if (!ZEND_DEBUG || op_type == IS_VAR) {
return _get_zval_ptr_var(node.var EXECUTE_DATA_CC);
} else {
ZEND_ASSERT(op_type == IS_TMP_VAR);
return _get_zval_ptr_tmp(node.var EXECUTE_DATA_CC);
}
} else {
if (op_type == IS_CONST) {
return RT_CONSTANT(opline + 1, node);
} else if (op_type == IS_CV) {
return _get_zval_ptr_cv_BP_VAR_R(node.var EXECUTE_DATA_CC);
} else {
return NULL;
}
}
}
static zend_always_inline ZEND_ATTRIBUTE_UNUSED zval *_get_zval_ptr_deref(int op_type, znode_op node, int type EXECUTE_DATA_DC OPLINE_DC)
{
if (op_type & (IS_TMP_VAR|IS_VAR)) {
if (op_type == IS_TMP_VAR) {
return _get_zval_ptr_tmp(node.var EXECUTE_DATA_CC);
} else {
ZEND_ASSERT(op_type == IS_VAR);
return _get_zval_ptr_var_deref(node.var EXECUTE_DATA_CC);
}
} else {
if (op_type == IS_CONST) {
return RT_CONSTANT(opline, node);
} else if (op_type == IS_CV) {
return _get_zval_ptr_cv_deref(node.var, type EXECUTE_DATA_CC);
} else {
return NULL;
}
}
}
static zend_always_inline ZEND_ATTRIBUTE_UNUSED zval *_get_op_data_zval_ptr_deref_r(int op_type, znode_op node EXECUTE_DATA_DC OPLINE_DC)
{
if (op_type & (IS_TMP_VAR|IS_VAR)) {
if (op_type == IS_TMP_VAR) {
return _get_zval_ptr_tmp(node.var EXECUTE_DATA_CC);
} else {
ZEND_ASSERT(op_type == IS_VAR);
return _get_zval_ptr_var_deref(node.var EXECUTE_DATA_CC);
}
} else {
if (op_type == IS_CONST) {
return RT_CONSTANT(opline + 1, node);
} else if (op_type == IS_CV) {
return _get_zval_ptr_cv_deref_BP_VAR_R(node.var EXECUTE_DATA_CC);
} else {
return NULL;
}
}
}
static zend_always_inline zval *_get_zval_ptr_undef(int op_type, znode_op node, int type EXECUTE_DATA_DC OPLINE_DC)
{
if (op_type & (IS_TMP_VAR|IS_VAR)) {
if (!ZEND_DEBUG || op_type == IS_VAR) {
return _get_zval_ptr_var(node.var EXECUTE_DATA_CC);
} else {
ZEND_ASSERT(op_type == IS_TMP_VAR);
return _get_zval_ptr_tmp(node.var EXECUTE_DATA_CC);
}
} else {
if (op_type == IS_CONST) {
return RT_CONSTANT(opline, node);
} else if (op_type == IS_CV) {
return EX_VAR(node.var);
} else {
return NULL;
}
}
}
static zend_always_inline zval *_get_zval_ptr_ptr_var(uint32_t var EXECUTE_DATA_DC)
{
zval *ret = EX_VAR(var);
if (EXPECTED(Z_TYPE_P(ret) == IS_INDIRECT)) {
ret = Z_INDIRECT_P(ret);
}
return ret;
}
static inline zval *_get_zval_ptr_ptr(int op_type, znode_op node, int type EXECUTE_DATA_DC)
{
if (op_type == IS_CV) {
return _get_zval_ptr_cv(node.var, type EXECUTE_DATA_CC);
} else /* if (op_type == IS_VAR) */ {
ZEND_ASSERT(op_type == IS_VAR);
return _get_zval_ptr_ptr_var(node.var EXECUTE_DATA_CC);
}
}
static inline ZEND_ATTRIBUTE_UNUSED zval *_get_obj_zval_ptr(int op_type, znode_op op, int type EXECUTE_DATA_DC OPLINE_DC)
{
if (op_type == IS_UNUSED) {
return &EX(This);
}
return get_zval_ptr(op_type, op, type);
}
static inline ZEND_ATTRIBUTE_UNUSED zval *_get_obj_zval_ptr_undef(int op_type, znode_op op, int type EXECUTE_DATA_DC OPLINE_DC)
{
if (op_type == IS_UNUSED) {
return &EX(This);
}
return get_zval_ptr_undef(op_type, op, type);
}
static inline ZEND_ATTRIBUTE_UNUSED zval *_get_obj_zval_ptr_ptr(int op_type, znode_op node, int type EXECUTE_DATA_DC)
{
if (op_type == IS_UNUSED) {
return &EX(This);
}
return get_zval_ptr_ptr(op_type, node, type);
}
static inline void zend_assign_to_variable_reference(zval *variable_ptr, zval *value_ptr)
{
zend_reference *ref;
if (EXPECTED(!Z_ISREF_P(value_ptr))) {
ZVAL_NEW_REF(value_ptr, value_ptr);
} else if (UNEXPECTED(variable_ptr == value_ptr)) {
return;
}
ref = Z_REF_P(value_ptr);
GC_ADDREF(ref);
if (Z_REFCOUNTED_P(variable_ptr)) {
zend_refcounted *garbage = Z_COUNTED_P(variable_ptr);
if (GC_DELREF(garbage) == 0) {
ZVAL_REF(variable_ptr, ref);
rc_dtor_func(garbage);
return;
} else {
gc_check_possible_root(garbage);
}
}
ZVAL_REF(variable_ptr, ref);
}
static zend_never_inline zval* zend_assign_to_typed_property_reference(zend_property_info *prop_info, zval *prop, zval *value_ptr EXECUTE_DATA_DC)
{
if (!zend_verify_prop_assignable_by_ref(prop_info, value_ptr, EX_USES_STRICT_TYPES())) {
return &EG(uninitialized_zval);
}
if (Z_ISREF_P(prop)) {
ZEND_REF_DEL_TYPE_SOURCE(Z_REF_P(prop), prop_info);
}
zend_assign_to_variable_reference(prop, value_ptr);
ZEND_REF_ADD_TYPE_SOURCE(Z_REF_P(prop), prop_info);
return prop;
}
static zend_never_inline ZEND_COLD zval *zend_wrong_assign_to_variable_reference(zval *variable_ptr, zval *value_ptr OPLINE_DC EXECUTE_DATA_DC)
{
zend_error(E_NOTICE, "Only variables should be assigned by reference");
if (UNEXPECTED(EG(exception) != NULL)) {
return &EG(uninitialized_zval);
}
/* Use IS_TMP_VAR instead of IS_VAR to avoid ISREF check */
Z_TRY_ADDREF_P(value_ptr);
return zend_assign_to_variable(variable_ptr, value_ptr, IS_TMP_VAR, EX_USES_STRICT_TYPES());
}
ZEND_API ZEND_COLD void ZEND_FASTCALL zend_cannot_pass_by_reference(uint32_t arg_num)
{
const zend_execute_data *execute_data = EG(current_execute_data);
zend_string *func_name = get_function_or_method_name(EX(call)->func);
const char *param_name = get_function_arg_name(EX(call)->func, arg_num);
zend_throw_error(NULL, "%s(): Argument #%d%s%s%s cannot be passed by reference",
ZSTR_VAL(func_name), arg_num, param_name ? " ($" : "", param_name ? param_name : "", param_name ? ")" : ""
);
zend_string_release(func_name);
}
static zend_never_inline ZEND_COLD void zend_throw_auto_init_in_prop_error(zend_property_info *prop, const char *type) {
zend_string *type_str = zend_type_to_string(prop->type);
zend_type_error(
"Cannot auto-initialize an %s inside property %s::$%s of type %s",
type,
ZSTR_VAL(prop->ce->name), zend_get_unmangled_property_name(prop->name),
ZSTR_VAL(type_str)
);
zend_string_release(type_str);
}
static zend_never_inline ZEND_COLD void zend_throw_auto_init_in_ref_error(zend_property_info *prop, const char *type) {
zend_string *type_str = zend_type_to_string(prop->type);
zend_type_error(
"Cannot auto-initialize an %s inside a reference held by property %s::$%s of type %s",
type,
ZSTR_VAL(prop->ce->name), zend_get_unmangled_property_name(prop->name),
ZSTR_VAL(type_str)
);
zend_string_release(type_str);
}
static zend_never_inline ZEND_COLD void zend_throw_access_uninit_prop_by_ref_error(
zend_property_info *prop) {
zend_throw_error(NULL,
"Cannot access uninitialized non-nullable property %s::$%s by reference",
ZSTR_VAL(prop->ce->name),
zend_get_unmangled_property_name(prop->name));
}
/* this should modify object only if it's empty */
static zend_never_inline ZEND_COLD void ZEND_FASTCALL zend_throw_non_object_error(zval *object, zval *property OPLINE_DC EXECUTE_DATA_DC)
{
zend_string *tmp_property_name;
zend_string *property_name = zval_get_tmp_string(property, &tmp_property_name);
if (opline->opcode == ZEND_PRE_INC_OBJ
|| opline->opcode == ZEND_PRE_DEC_OBJ
|| opline->opcode == ZEND_POST_INC_OBJ
|| opline->opcode == ZEND_POST_DEC_OBJ) {
zend_throw_error(NULL,
"Attempt to increment/decrement property \"%s\" on %s",
ZSTR_VAL(property_name), zend_zval_type_name(object)
);
} else if (opline->opcode == ZEND_FETCH_OBJ_W
|| opline->opcode == ZEND_FETCH_OBJ_RW
|| opline->opcode == ZEND_FETCH_OBJ_FUNC_ARG
|| opline->opcode == ZEND_ASSIGN_OBJ_REF) {
zend_throw_error(NULL,
"Attempt to modify property \"%s\" on %s",
ZSTR_VAL(property_name), zend_zval_type_name(object)
);
} else {
zend_throw_error(NULL,
"Attempt to assign property \"%s\" on %s",
ZSTR_VAL(property_name), zend_zval_type_name(object)
);
}
zend_tmp_string_release(tmp_property_name);
if (UNEXPECTED(RETURN_VALUE_USED(opline))) {
ZVAL_NULL(EX_VAR(opline->result.var));
}
}
static ZEND_COLD void zend_verify_type_error_common(
const zend_function *zf, const zend_arg_info *arg_info, zval *value,
const char **fname, const char **fsep, const char **fclass,
zend_string **need_msg, const char **given_kind)
{
*fname = ZSTR_VAL(zf->common.function_name);
if (zf->common.scope) {
*fsep = "::";
*fclass = ZSTR_VAL(zf->common.scope->name);
} else {
*fsep = "";
*fclass = "";
}
*need_msg = zend_type_to_string_resolved(arg_info->type, zf->common.scope);
if (value) {
*given_kind = zend_zval_type_name(value);
} else {
*given_kind = "none";
}
}
ZEND_API ZEND_COLD void zend_verify_arg_error(
const zend_function *zf, const zend_arg_info *arg_info, uint32_t arg_num, zval *value)
{
zend_execute_data *ptr = EG(current_execute_data)->prev_execute_data;
const char *fname, *fsep, *fclass;
zend_string *need_msg;
const char *given_msg;
zend_verify_type_error_common(
zf, arg_info, value, &fname, &fsep, &fclass, &need_msg, &given_msg);
ZEND_ASSERT(zf->common.type == ZEND_USER_FUNCTION
&& "Arginfo verification is not performed for internal functions");
if (ptr && ptr->func && ZEND_USER_CODE(ptr->func->common.type)) {
zend_argument_type_error(arg_num, "must be of type %s, %s given, called in %s on line %d",
ZSTR_VAL(need_msg), given_msg,
ZSTR_VAL(ptr->func->op_array.filename), ptr->opline->lineno
);
} else {
zend_argument_type_error(arg_num,
"must be of type %s, %s given", ZSTR_VAL(need_msg), given_msg);
}
zend_string_release(need_msg);
}
static bool zend_verify_weak_scalar_type_hint(uint32_t type_mask, zval *arg)
{
zend_long lval;
double dval;
zend_string *str;
bool bval;
/* Type preference order: int -> float -> string -> bool */
if (type_mask & MAY_BE_LONG) {
/* For an int|float union type and string value,
* determine chosen type by is_numeric_string() semantics. */
if ((type_mask & MAY_BE_DOUBLE) && Z_TYPE_P(arg) == IS_STRING) {
zend_uchar type = is_numeric_str_function(Z_STR_P(arg), &lval, &dval);
if (type == IS_LONG) {
zend_string_release(Z_STR_P(arg));
ZVAL_LONG(arg, lval);
return 1;
}
if (type == IS_DOUBLE) {
zend_string_release(Z_STR_P(arg));
ZVAL_DOUBLE(arg, dval);
return 1;
}
} else if (zend_parse_arg_long_weak(arg, &lval, 0)) {
zval_ptr_dtor(arg);
ZVAL_LONG(arg, lval);
return 1;
} else if (UNEXPECTED(EG(exception))) {
return 0;
}
}
if ((type_mask & MAY_BE_DOUBLE) && zend_parse_arg_double_weak(arg, &dval, 0)) {
zval_ptr_dtor(arg);
ZVAL_DOUBLE(arg, dval);
return 1;
}
if ((type_mask & MAY_BE_STRING) && zend_parse_arg_str_weak(arg, &str, 0)) {
/* on success "arg" is converted to IS_STRING */
return 1;
}
if ((type_mask & MAY_BE_BOOL) == MAY_BE_BOOL && zend_parse_arg_bool_weak(arg, &bval, 0)) {
zval_ptr_dtor(arg);
ZVAL_BOOL(arg, bval);
return 1;
}
return 0;
}
#if ZEND_DEBUG
static bool can_convert_to_string(zval *zv) {
/* We don't call cast_object here, because this check must be side-effect free. As this
* is only used for a sanity check of arginfo/zpp consistency, it's okay if we accept
* more than actually allowed here. */
if (Z_TYPE_P(zv) == IS_OBJECT) {
return Z_OBJ_HT_P(zv)->cast_object != zend_std_cast_object_tostring
|| Z_OBJCE_P(zv)->__tostring;
}
return Z_TYPE_P(zv) <= IS_STRING;
}
/* Used to sanity-check internal arginfo types without performing any actual type conversions. */
static bool zend_verify_weak_scalar_type_hint_no_sideeffect(uint32_t type_mask, zval *arg)
{
zend_long lval;
double dval;
bool bval;
/* Pass (uint32_t)-1 as arg_num to indicate to ZPP not to emit any deprecation notice,
* this is needed because the version with side effects also uses 0 (e.g. for typed properties) */
if ((type_mask & MAY_BE_LONG) && zend_parse_arg_long_weak(arg, &lval, (uint32_t)-1)) {
return 1;
}
if ((type_mask & MAY_BE_DOUBLE) && zend_parse_arg_double_weak(arg, &dval, (uint32_t)-1)) {
return 1;
}
if ((type_mask & MAY_BE_STRING) && can_convert_to_string(arg)) {
return 1;
}
if ((type_mask & MAY_BE_BOOL) == MAY_BE_BOOL && zend_parse_arg_bool_weak(arg, &bval, (uint32_t)-1)) {
return 1;
}
return 0;
}
#endif
ZEND_API bool zend_verify_scalar_type_hint(uint32_t type_mask, zval *arg, bool strict, bool is_internal_arg)
{
if (UNEXPECTED(strict)) {
/* SSTH Exception: IS_LONG may be accepted as IS_DOUBLE (converted) */
if (!(type_mask & MAY_BE_DOUBLE) || Z_TYPE_P(arg) != IS_LONG) {
return 0;
}
} else if (UNEXPECTED(Z_TYPE_P(arg) == IS_NULL)) {
/* NULL may be accepted only by nullable hints (this is already checked).
* As an exception for internal functions, null is allowed for scalar types in weak mode. */
return is_internal_arg
&& (type_mask & (MAY_BE_TRUE|MAY_BE_FALSE|MAY_BE_LONG|MAY_BE_DOUBLE|MAY_BE_STRING));
}
#if ZEND_DEBUG
if (is_internal_arg) {
return zend_verify_weak_scalar_type_hint_no_sideeffect(type_mask, arg);
}
#endif
return zend_verify_weak_scalar_type_hint(type_mask, arg);
}
ZEND_COLD zend_never_inline void zend_verify_property_type_error(zend_property_info *info, zval *property)
{
zend_string *type_str;
/* we _may_ land here in case reading already errored and runtime cache thus has not been updated (i.e. it contains a valid but unrelated info) */
if (EG(exception)) {
return;
}
type_str = zend_type_to_string(info->type);
zend_type_error("Cannot assign %s to property %s::$%s of type %s",
zend_zval_type_name(property),
ZSTR_VAL(info->ce->name),
zend_get_unmangled_property_name(info->name),
ZSTR_VAL(type_str));
zend_string_release(type_str);
}
ZEND_COLD void zend_match_unhandled_error(zval *value)
{
smart_str msg = {0};
if (Z_TYPE_P(value) <= IS_STRING) {
smart_str_append_scalar(&msg, value, EG(exception_string_param_max_len));
} else {
smart_str_appendl(&msg, "of type ", sizeof("of type ")-1);
smart_str_appends(&msg, zend_zval_type_name(value));
}
smart_str_0(&msg);
zend_throw_exception_ex(
zend_ce_unhandled_match_error, 0, "Unhandled match case %s", ZSTR_VAL(msg.s));
smart_str_free(&msg);
}
ZEND_API ZEND_COLD void ZEND_FASTCALL zend_readonly_property_modification_error(
zend_property_info *info) {
zend_throw_error(NULL, "Cannot modify readonly property %s::$%s",
ZSTR_VAL(info->ce->name), zend_get_unmangled_property_name(info->name));
}
static zend_class_entry *resolve_single_class_type(zend_string *name, zend_class_entry *self_ce) {
if (zend_string_equals_literal_ci(name, "self")) {
return self_ce;
} else if (zend_string_equals_literal_ci(name, "parent")) {
return self_ce->parent;
} else {
return zend_lookup_class_ex(name, NULL, ZEND_FETCH_CLASS_NO_AUTOLOAD);
}
}
static zend_always_inline zend_class_entry *zend_ce_from_type(
zend_property_info *info, zend_type *type) {
ZEND_ASSERT(ZEND_TYPE_HAS_NAME(*type));
zend_string *name = ZEND_TYPE_NAME(*type);
if (ZSTR_HAS_CE_CACHE(name)) {
zend_class_entry *ce = ZSTR_GET_CE_CACHE(name);
if (!ce) {
ce = zend_lookup_class_ex(name, NULL, ZEND_FETCH_CLASS_NO_AUTOLOAD);
}
return ce;
}
return resolve_single_class_type(name, info->ce);
}
static bool zend_check_and_resolve_property_class_type(
zend_property_info *info, zend_class_entry *object_ce) {
if (ZEND_TYPE_HAS_LIST(info->type)) {
zend_type *list_type;
if (ZEND_TYPE_IS_INTERSECTION(info->type)) {
ZEND_TYPE_LIST_FOREACH(ZEND_TYPE_LIST(info->type), list_type) {
zend_class_entry *ce = zend_ce_from_type(info, list_type);
if (!ce || !instanceof_function(object_ce, ce)) {
return false;
}
} ZEND_TYPE_LIST_FOREACH_END();
return true;
} else {
ZEND_TYPE_LIST_FOREACH(ZEND_TYPE_LIST(info->type), list_type) {
zend_class_entry *ce = zend_ce_from_type(info, list_type);
if (ce && instanceof_function(object_ce, ce)) {
return true;
}
} ZEND_TYPE_LIST_FOREACH_END();
return false;
}
} else {
zend_class_entry *ce = zend_ce_from_type(info, &info->type);
return ce && instanceof_function(object_ce, ce);
}
}
static zend_always_inline bool i_zend_check_property_type(zend_property_info *info, zval *property, bool strict)
{
ZEND_ASSERT(!Z_ISREF_P(property));
if (EXPECTED(ZEND_TYPE_CONTAINS_CODE(info->type, Z_TYPE_P(property)))) {
return 1;
}
if (ZEND_TYPE_IS_COMPLEX(info->type) && Z_TYPE_P(property) == IS_OBJECT
&& zend_check_and_resolve_property_class_type(info, Z_OBJCE_P(property))) {
return 1;
}
uint32_t type_mask = ZEND_TYPE_FULL_MASK(info->type);
ZEND_ASSERT(!(type_mask & (MAY_BE_CALLABLE|MAY_BE_STATIC)));
if ((type_mask & MAY_BE_ITERABLE) && zend_is_iterable(property)) {
return 1;
}
return zend_verify_scalar_type_hint(type_mask, property, strict, 0);
}
static zend_always_inline bool i_zend_verify_property_type(zend_property_info *info, zval *property, bool strict)
{
if (i_zend_check_property_type(info, property, strict)) {
return 1;
}
zend_verify_property_type_error(info, property);
return 0;
}
ZEND_API bool zend_never_inline zend_verify_property_type(zend_property_info *info, zval *property, bool strict) {
return i_zend_verify_property_type(info, property, strict);
}
static zend_never_inline zval* zend_assign_to_typed_prop(zend_property_info *info, zval *property_val, zval *value EXECUTE_DATA_DC)
{
zval tmp;
if (UNEXPECTED(info->flags & ZEND_ACC_READONLY)) {
zend_readonly_property_modification_error(info);
return &EG(uninitialized_zval);
}
ZVAL_DEREF(value);
ZVAL_COPY(&tmp, value);
if (UNEXPECTED(!i_zend_verify_property_type(info, &tmp, EX_USES_STRICT_TYPES()))) {
zval_ptr_dtor(&tmp);
return &EG(uninitialized_zval);
}
return zend_assign_to_variable(property_val, &tmp, IS_TMP_VAR, EX_USES_STRICT_TYPES());
}
static zend_always_inline bool zend_value_instanceof_static(zval *zv) {
if (Z_TYPE_P(zv) != IS_OBJECT) {
return 0;
}
zend_class_entry *called_scope = zend_get_called_scope(EG(current_execute_data));
if (!called_scope) {
return 0;
}
return instanceof_function(Z_OBJCE_P(zv), called_scope);
}
/* The cache_slot may only be NULL in debug builds, where arginfo verification of
* internal functions is enabled. Avoid unnecessary checks in release builds. */
#if ZEND_DEBUG
# define HAVE_CACHE_SLOT (cache_slot != NULL)
#else
# define HAVE_CACHE_SLOT 1
#endif
static zend_always_inline zend_class_entry *zend_fetch_ce_from_cache_slot(
void **cache_slot, zend_type *type)
{
if (EXPECTED(HAVE_CACHE_SLOT && *cache_slot)) {
return (zend_class_entry *) *cache_slot;
}
zend_string *name = ZEND_TYPE_NAME(*type);
zend_class_entry *ce;
if (ZSTR_HAS_CE_CACHE(name)) {
ce = ZSTR_GET_CE_CACHE(name);
if (!ce) {
ce = zend_lookup_class_ex(name, NULL, ZEND_FETCH_CLASS_NO_AUTOLOAD);
if (UNEXPECTED(!ce)) {
/* Cannot resolve */
return NULL;
}
}
} else {
ce = zend_fetch_class(name,
ZEND_FETCH_CLASS_AUTO | ZEND_FETCH_CLASS_NO_AUTOLOAD | ZEND_FETCH_CLASS_SILENT);
if (UNEXPECTED(!ce)) {
return NULL;
}
}
if (HAVE_CACHE_SLOT) {
*cache_slot = (void *) ce;
}
return ce;
}
static zend_always_inline bool zend_check_type_slow(
zend_type *type, zval *arg, zend_reference *ref, void **cache_slot,
bool is_return_type, bool is_internal)
{
uint32_t type_mask;
if (ZEND_TYPE_IS_COMPLEX(*type) && EXPECTED(Z_TYPE_P(arg) == IS_OBJECT)) {
zend_class_entry *ce;
if (UNEXPECTED(ZEND_TYPE_HAS_LIST(*type))) {
zend_type *list_type;
if (ZEND_TYPE_IS_INTERSECTION(*type)) {
ZEND_TYPE_LIST_FOREACH(ZEND_TYPE_LIST(*type), list_type) {
ce = zend_fetch_ce_from_cache_slot(cache_slot, list_type);
/* If type is not an instance of one of the types taking part in the
* intersection it cannot be a valid instance of the whole intersection type. */
if (!ce || !instanceof_function(Z_OBJCE_P(arg), ce)) {
return false;
}
if (HAVE_CACHE_SLOT) {
cache_slot++;
}
} ZEND_TYPE_LIST_FOREACH_END();
return true;
} else {
ZEND_TYPE_LIST_FOREACH(ZEND_TYPE_LIST(*type), list_type) {
ce = zend_fetch_ce_from_cache_slot(cache_slot, list_type);
/* Instance of a single type part of a union is sufficient to pass the type check */
if (ce && instanceof_function(Z_OBJCE_P(arg), ce)) {
return true;
}
if (HAVE_CACHE_SLOT) {
cache_slot++;
}
} ZEND_TYPE_LIST_FOREACH_END();
}
} else {
ce = zend_fetch_ce_from_cache_slot(cache_slot, type);
/* If we have a CE we check if it satisfies the type constraint,
* otherwise it will check if a standard type satisfies it. */
if (ce && instanceof_function(Z_OBJCE_P(arg), ce)) {
return true;
}
}
}
type_mask = ZEND_TYPE_FULL_MASK(*type);
if ((type_mask & MAY_BE_CALLABLE) && zend_is_callable(arg, 0, NULL)) {
return 1;
}
if ((type_mask & MAY_BE_ITERABLE) && zend_is_iterable(arg)) {
return 1;
}
if ((type_mask & MAY_BE_STATIC) && zend_value_instanceof_static(arg)) {
return 1;
}
if (ref && ZEND_REF_HAS_TYPE_SOURCES(ref)) {
/* We cannot have conversions for typed refs. */
return 0;
}
if (is_internal && is_return_type) {
/* For internal returns, the type has to match exactly, because we're not
* going to check it for non-debug builds, and there will be no chance to
* apply coercions. */
return 0;
}
return zend_verify_scalar_type_hint(type_mask, arg,
is_return_type ? ZEND_RET_USES_STRICT_TYPES() : ZEND_ARG_USES_STRICT_TYPES(),
is_internal);
/* Special handling for IS_VOID is not necessary (for return types),
* because this case is already checked at compile-time. */
}
static zend_always_inline bool zend_check_type(
zend_type *type, zval *arg, void **cache_slot, zend_class_entry *scope,
bool is_return_type, bool is_internal)
{
zend_reference *ref = NULL;
ZEND_ASSERT(ZEND_TYPE_IS_SET(*type));
if (UNEXPECTED(Z_ISREF_P(arg))) {
ref = Z_REF_P(arg);
arg = Z_REFVAL_P(arg);
}
if (EXPECTED(ZEND_TYPE_CONTAINS_CODE(*type, Z_TYPE_P(arg)))) {
return 1;
}
return zend_check_type_slow(type, arg, ref, cache_slot, is_return_type, is_internal);
}
ZEND_API bool zend_check_user_type_slow(
zend_type *type, zval *arg, zend_reference *ref, void **cache_slot, bool is_return_type)
{
return zend_check_type_slow(
type, arg, ref, cache_slot, is_return_type, /* is_internal */ false);
}
static zend_always_inline bool zend_verify_recv_arg_type(zend_function *zf, uint32_t arg_num, zval *arg, void **cache_slot)
{
zend_arg_info *cur_arg_info;
ZEND_ASSERT(arg_num <= zf->common.num_args);
cur_arg_info = &zf->common.arg_info[arg_num-1];
if (ZEND_TYPE_IS_SET(cur_arg_info->type)
&& UNEXPECTED(!zend_check_type(&cur_arg_info->type, arg, cache_slot, zf->common.scope, 0, 0))) {
zend_verify_arg_error(zf, cur_arg_info, arg_num, arg);
return 0;
}
return 1;
}
static zend_always_inline bool zend_verify_variadic_arg_type(
zend_function *zf, zend_arg_info *arg_info, uint32_t arg_num, zval *arg, void **cache_slot)
{
ZEND_ASSERT(ZEND_TYPE_IS_SET(arg_info->type));
if (UNEXPECTED(!zend_check_type(&arg_info->type, arg, cache_slot, zf->common.scope, 0, 0))) {
zend_verify_arg_error(zf, arg_info, arg_num, arg);
return 0;
}
return 1;
}
static zend_never_inline ZEND_ATTRIBUTE_UNUSED bool zend_verify_internal_arg_types(zend_function *fbc, zend_execute_data *call)
{
uint32_t i;
uint32_t num_args = ZEND_CALL_NUM_ARGS(call);
zval *arg = ZEND_CALL_ARG(call, 1);
for (i = 0; i < num_args; ++i) {
zend_arg_info *cur_arg_info;
if (EXPECTED(i < fbc->common.num_args)) {
cur_arg_info = &fbc->common.arg_info[i];
} else if (UNEXPECTED(fbc->common.fn_flags & ZEND_ACC_VARIADIC)) {
cur_arg_info = &fbc->common.arg_info[fbc->common.num_args];
} else {
break;
}
if (ZEND_TYPE_IS_SET(cur_arg_info->type)
&& UNEXPECTED(!zend_check_type(&cur_arg_info->type, arg, /* cache_slot */ NULL, fbc->common.scope, 0, /* is_internal */ 1))) {
return 0;
}
arg++;
}
return 1;
}
#if ZEND_DEBUG
/* Determine whether an internal call should throw, because the passed arguments violate
* an arginfo constraint. This is only checked in debug builds. In release builds, we
* trust that arginfo matches what is enforced by zend_parse_parameters. */
ZEND_API bool zend_internal_call_should_throw(zend_function *fbc, zend_execute_data *call)
{
if (fbc->internal_function.handler == ZEND_FN(pass)) {
/* Be lenient about the special pass function. */
return 0;
}
if (fbc->common.required_num_args > ZEND_CALL_NUM_ARGS(call)) {
/* Required argument not passed. */
return 1;
}
if (fbc->common.num_args < ZEND_CALL_NUM_ARGS(call)
&& !(fbc->common.fn_flags & ZEND_ACC_VARIADIC)) {
/* Too many arguments passed. For internal functions (unlike userland functions),
* this should always throw. */
return 1;
}
if ((fbc->common.fn_flags & ZEND_ACC_HAS_TYPE_HINTS) &&
!zend_verify_internal_arg_types(fbc, call)) {
return 1;
}
return 0;
}
ZEND_API ZEND_COLD void zend_internal_call_arginfo_violation(zend_function *fbc)
{
zend_error(E_ERROR, "Arginfo / zpp mismatch during call of %s%s%s()",
fbc->common.scope ? ZSTR_VAL(fbc->common.scope->name) : "",
fbc->common.scope ? "::" : "",
ZSTR_VAL(fbc->common.function_name));
}
static void zend_verify_internal_read_property_type(zend_object *obj, zend_string *name, zval *val)
{
zend_property_info *prop_info =
zend_get_property_info(obj->ce, name, /* silent */ true);
if (prop_info && prop_info != ZEND_WRONG_PROPERTY_INFO && ZEND_TYPE_IS_SET(prop_info->type)) {
zend_verify_property_type(prop_info, val, /* strict */ true);
}
}
#ifndef ZEND_VERIFY_FUNC_INFO
# define ZEND_VERIFY_FUNC_INFO 0
#endif
static void zend_verify_internal_func_info(zend_function *fn, zval *retval) {
#if ZEND_VERIFY_FUNC_INFO
zend_string *name = fn->common.function_name;
uint32_t type_mask = zend_get_internal_func_info(fn, NULL, NULL);
if (!type_mask) {
return;
}
/* Always check refcount of arrays, as immutable arrays are RCN. */
if (Z_REFCOUNTED_P(retval) || Z_TYPE_P(retval) == IS_ARRAY) {
if (!(type_mask & MAY_BE_RC1)) {
zend_error_noreturn(E_CORE_ERROR, "%s() missing rc1", ZSTR_VAL(name));
}
if (Z_REFCOUNT_P(retval) > 1 && !(type_mask & MAY_BE_RCN)) {
zend_error_noreturn(E_CORE_ERROR, "%s() missing rcn", ZSTR_VAL(name));
}
}
uint32_t type = 1u << Z_TYPE_P(retval);
if (!(type_mask & type)) {
zend_error_noreturn(E_CORE_ERROR, "%s() missing type %s",
ZSTR_VAL(name), zend_get_type_by_const(Z_TYPE_P(retval)));
}
if (Z_TYPE_P(retval) == IS_ARRAY) {
HashTable *ht = Z_ARRVAL_P(retval);
uint32_t num_checked = 0;
zend_string *str;
zval *val;
ZEND_HASH_FOREACH_STR_KEY_VAL(ht, str, val) {
if (str) {
if (!(type_mask & MAY_BE_ARRAY_KEY_STRING)) {
zend_error_noreturn(E_CORE_ERROR,
"%s() missing array_key_string", ZSTR_VAL(name));
}
} else {
if (!(type_mask & MAY_BE_ARRAY_KEY_LONG)) {
zend_error_noreturn(E_CORE_ERROR,
"%s() missing array_key_long", ZSTR_VAL(name));
}
}
uint32_t array_type = 1u << (Z_TYPE_P(val) + MAY_BE_ARRAY_SHIFT);
if (!(type_mask & array_type)) {
zend_error_noreturn(E_CORE_ERROR,
"%s() missing array element type %s",
ZSTR_VAL(name), zend_get_type_by_const(Z_TYPE_P(retval)));
}
/* Don't check all elements of large arrays. */
if (++num_checked > 16) {
break;
}
} ZEND_HASH_FOREACH_END();
}
#endif
}
#endif
ZEND_API ZEND_COLD void ZEND_FASTCALL zend_missing_arg_error(zend_execute_data *execute_data)
{
zend_execute_data *ptr = EX(prev_execute_data);
if (ptr && ptr->func && ZEND_USER_CODE(ptr->func->common.type)) {
zend_throw_error(zend_ce_argument_count_error, "Too few arguments to function %s%s%s(), %d passed in %s on line %d and %s %d expected",
EX(func)->common.scope ? ZSTR_VAL(EX(func)->common.scope->name) : "",
EX(func)->common.scope ? "::" : "",
ZSTR_VAL(EX(func)->common.function_name),
EX_NUM_ARGS(),
ZSTR_VAL(ptr->func->op_array.filename),
ptr->opline->lineno,
EX(func)->common.required_num_args == EX(func)->common.num_args ? "exactly" : "at least",
EX(func)->common.required_num_args);
} else {
zend_throw_error(zend_ce_argument_count_error, "Too few arguments to function %s%s%s(), %d passed and %s %d expected",
EX(func)->common.scope ? ZSTR_VAL(EX(func)->common.scope->name) : "",
EX(func)->common.scope ? "::" : "",
ZSTR_VAL(EX(func)->common.function_name),
EX_NUM_ARGS(),
EX(func)->common.required_num_args == EX(func)->common.num_args ? "exactly" : "at least",
EX(func)->common.required_num_args);
}
}
ZEND_API ZEND_COLD void zend_verify_return_error(const zend_function *zf, zval *value)
{
const zend_arg_info *arg_info = &zf->common.arg_info[-1];
const char *fname, *fsep, *fclass;
zend_string *need_msg;
const char *given_msg;
zend_verify_type_error_common(
zf, arg_info, value, &fname, &fsep, &fclass, &need_msg, &given_msg);
zend_type_error("%s%s%s(): Return value must be of type %s, %s returned",
fclass, fsep, fname, ZSTR_VAL(need_msg), given_msg);
zend_string_release(need_msg);
}
ZEND_API ZEND_COLD void zend_verify_never_error(const zend_function *zf)
{
zend_string *func_name = get_function_or_method_name(zf);
zend_type_error("%s(): never-returning function must not implicitly return",
ZSTR_VAL(func_name));
zend_string_release(func_name);
}
#if ZEND_DEBUG
static ZEND_COLD void zend_verify_internal_return_error(const zend_function *zf, zval *value)
{
const zend_arg_info *arg_info = &zf->common.arg_info[-1];
const char *fname, *fsep, *fclass;
zend_string *need_msg;
const char *given_msg;
zend_verify_type_error_common(
zf, arg_info, value, &fname, &fsep, &fclass, &need_msg, &given_msg);
zend_error_noreturn(E_CORE_ERROR, "%s%s%s(): Return value must be of type %s, %s returned",
fclass, fsep, fname, ZSTR_VAL(need_msg), given_msg);
}
static ZEND_COLD void zend_verify_void_return_error(const zend_function *zf, const char *returned_msg, const char *returned_kind)
{
const char *fname = ZSTR_VAL(zf->common.function_name);
const char *fsep;
const char *fclass;
if (zf->common.scope) {
fsep = "::";
fclass = ZSTR_VAL(zf->common.scope->name);
} else {
fsep = "";
fclass = "";
}
zend_type_error("%s%s%s() must not return a value, %s%s returned",
fclass, fsep, fname, returned_msg, returned_kind);
}
ZEND_API bool zend_verify_internal_return_type(zend_function *zf, zval *ret)
{
zend_internal_arg_info *ret_info = zf->internal_function.arg_info - 1;
if (ZEND_TYPE_FULL_MASK(ret_info->type) & MAY_BE_VOID) {
if (UNEXPECTED(Z_TYPE_P(ret) != IS_NULL)) {
zend_verify_void_return_error(zf, zend_zval_type_name(ret), "");
return 0;
}
return 1;
}
if (UNEXPECTED(!zend_check_type(&ret_info->type, ret, /* cache_slot */ NULL, NULL, 1, /* is_internal */ 1))) {
zend_verify_internal_return_error(zf, ret);
return 0;
}
return 1;
}
#endif
static ZEND_COLD void zend_verify_missing_return_type(const zend_function *zf)
{
/* VERIFY_RETURN_TYPE is not emitted for "void" functions, so this is always an error. */
zend_verify_return_error(zf, NULL);
}
static zend_never_inline ZEND_COLD void ZEND_FASTCALL zend_use_object_as_array(void)
{
zend_throw_error(NULL, "Cannot use object as array");
}
static zend_never_inline ZEND_COLD void ZEND_FASTCALL zend_illegal_offset(void)
{
zend_type_error("Illegal offset type");
}
static zend_never_inline ZEND_COLD void ZEND_FASTCALL zend_illegal_string_offset(const zval *offset)
{
zend_type_error("Cannot access offset of type %s on string", zend_zval_type_name(offset));
}
static zend_never_inline void zend_assign_to_object_dim(zval *object, zval *dim, zval *value OPLINE_DC EXECUTE_DATA_DC)
{
Z_OBJ_HT_P(object)->write_dimension(Z_OBJ_P(object), dim, value);
if (UNEXPECTED(RETURN_VALUE_USED(opline))) {
ZVAL_COPY(EX_VAR(opline->result.var), value);
}
}
static zend_always_inline int zend_binary_op(zval *ret, zval *op1, zval *op2 OPLINE_DC)
{
static const binary_op_type zend_binary_ops[] = {
add_function,
sub_function,
mul_function,
div_function,
mod_function,
shift_left_function,
shift_right_function,
concat_function,
bitwise_or_function,
bitwise_and_function,
bitwise_xor_function,
pow_function
};
/* size_t cast makes GCC to better optimize 64-bit PIC code */
size_t opcode = (size_t)opline->extended_value;
return zend_binary_ops[opcode - ZEND_ADD](ret, op1, op2);
}
static zend_never_inline void zend_binary_assign_op_obj_dim(zval *object, zval *property OPLINE_DC EXECUTE_DATA_DC)
{
zval *value;
zval *z;
zval rv, res;
value = get_op_data_zval_ptr_r((opline+1)->op1_type, (opline+1)->op1);
if ((z = Z_OBJ_HT_P(object)->read_dimension(Z_OBJ_P(object), property, BP_VAR_R, &rv)) != NULL) {
if (zend_binary_op(&res, z, value OPLINE_CC) == SUCCESS) {
Z_OBJ_HT_P(object)->write_dimension(Z_OBJ_P(object), property, &res);
}
if (z == &rv) {
zval_ptr_dtor(&rv);
}
if (UNEXPECTED(RETURN_VALUE_USED(opline))) {
ZVAL_COPY(EX_VAR(opline->result.var), &res);
}
zval_ptr_dtor(&res);
} else {
zend_use_object_as_array();
if (UNEXPECTED(RETURN_VALUE_USED(opline))) {
ZVAL_NULL(EX_VAR(opline->result.var));
}
}
FREE_OP((opline+1)->op1_type, (opline+1)->op1.var);
}
static zend_never_inline void zend_binary_assign_op_typed_ref(zend_reference *ref, zval *value OPLINE_DC EXECUTE_DATA_DC)
{
zval z_copy;
/* Make sure that in-place concatenation is used if the LHS is a string. */
if (opline->extended_value == ZEND_CONCAT && Z_TYPE(ref->val) == IS_STRING) {
concat_function(&ref->val, &ref->val, value);
ZEND_ASSERT(Z_TYPE(ref->val) == IS_STRING && "Concat should return string");
return;
}
zend_binary_op(&z_copy, &ref->val, value OPLINE_CC);
if (EXPECTED(zend_verify_ref_assignable_zval(ref, &z_copy, EX_USES_STRICT_TYPES()))) {
zval_ptr_dtor(&ref->val);
ZVAL_COPY_VALUE(&ref->val, &z_copy);
} else {
zval_ptr_dtor(&z_copy);
}
}
static zend_never_inline void zend_binary_assign_op_typed_prop(zend_property_info *prop_info, zval *zptr, zval *value OPLINE_DC EXECUTE_DATA_DC)
{
zval z_copy;
/* Make sure that in-place concatenation is used if the LHS is a string. */
if (opline->extended_value == ZEND_CONCAT && Z_TYPE_P(zptr) == IS_STRING) {
concat_function(zptr, zptr, value);
ZEND_ASSERT(Z_TYPE_P(zptr) == IS_STRING && "Concat should return string");
return;
}
zend_binary_op(&z_copy, zptr, value OPLINE_CC);
if (EXPECTED(zend_verify_property_type(prop_info, &z_copy, EX_USES_STRICT_TYPES()))) {
zval_ptr_dtor(zptr);
ZVAL_COPY_VALUE(zptr, &z_copy);
} else {
zval_ptr_dtor(&z_copy);
}
}
static zend_never_inline zend_long zend_check_string_offset(zval *dim, int type EXECUTE_DATA_DC)
{
zend_long offset;
try_again:
if (UNEXPECTED(Z_TYPE_P(dim) != IS_LONG)) {
switch(Z_TYPE_P(dim)) {
case IS_STRING:
{
bool trailing_data = false;
/* For BC reasons we allow errors so that we can warn on leading numeric string */
if (IS_LONG == is_numeric_string_ex(Z_STRVAL_P(dim), Z_STRLEN_P(dim), &offset, NULL,
/* allow errors */ true, NULL, &trailing_data)) {
if (UNEXPECTED(trailing_data) && type != BP_VAR_UNSET) {
zend_error(E_WARNING, "Illegal string offset \"%s\"", Z_STRVAL_P(dim));
}
return offset;
}
zend_illegal_string_offset(dim);
return 0;
}
case IS_UNDEF:
ZVAL_UNDEFINED_OP2();
ZEND_FALLTHROUGH;
case IS_DOUBLE:
case IS_NULL:
case IS_FALSE:
case IS_TRUE:
zend_error(E_WARNING, "String offset cast occurred");
break;
case IS_REFERENCE:
dim = Z_REFVAL_P(dim);
goto try_again;
default:
zend_illegal_string_offset(dim);
return 0;
}
offset = zval_get_long_func(dim, /* is_strict */ false);
} else {
offset = Z_LVAL_P(dim);
}
return offset;
}
static zend_never_inline ZEND_COLD void zend_wrong_string_offset(EXECUTE_DATA_D)
{
const char *msg = NULL;
const zend_op *opline = EX(opline);
uint32_t var;
if (UNEXPECTED(EG(exception) != NULL)) {
return;
}
switch (opline->opcode) {
case ZEND_ASSIGN_OP:
case ZEND_ASSIGN_DIM_OP:
case ZEND_ASSIGN_OBJ_OP:
case ZEND_ASSIGN_STATIC_PROP_OP:
msg = "Cannot use assign-op operators with string offsets";
break;
case ZEND_FETCH_DIM_W:
case ZEND_FETCH_DIM_RW:
case ZEND_FETCH_DIM_FUNC_ARG:
case ZEND_FETCH_DIM_UNSET:
case ZEND_FETCH_LIST_W:
/* TODO: Encode the "reason" into opline->extended_value??? */
var = opline->result.var;
opline++;
ZEND_ASSERT(opline < execute_data->func->op_array.opcodes +
execute_data->func->op_array.last);
if (opline->op1_type == IS_VAR && opline->op1.var == var) {
switch (opline->opcode) {
case ZEND_FETCH_OBJ_W:
case ZEND_FETCH_OBJ_RW:
case ZEND_FETCH_OBJ_FUNC_ARG:
case ZEND_FETCH_OBJ_UNSET:
case ZEND_ASSIGN_OBJ:
case ZEND_ASSIGN_OBJ_OP:
case ZEND_ASSIGN_OBJ_REF:
msg = "Cannot use string offset as an object";
break;
case ZEND_FETCH_DIM_W:
case ZEND_FETCH_DIM_RW:
case ZEND_FETCH_DIM_FUNC_ARG:
case ZEND_FETCH_DIM_UNSET:
case ZEND_FETCH_LIST_W:
case ZEND_ASSIGN_DIM:
case ZEND_ASSIGN_DIM_OP:
msg = "Cannot use string offset as an array";
break;
case ZEND_ASSIGN_STATIC_PROP_OP:
case ZEND_ASSIGN_OP:
msg = "Cannot use assign-op operators with string offsets";
break;
case ZEND_PRE_INC_OBJ:
case ZEND_PRE_DEC_OBJ:
case ZEND_POST_INC_OBJ:
case ZEND_POST_DEC_OBJ:
case ZEND_PRE_INC:
case ZEND_PRE_DEC:
case ZEND_POST_INC:
case ZEND_POST_DEC:
msg = "Cannot increment/decrement string offsets";
break;
case ZEND_ASSIGN_REF:
case ZEND_ADD_ARRAY_ELEMENT:
case ZEND_INIT_ARRAY:
case ZEND_MAKE_REF:
msg = "Cannot create references to/from string offsets";
break;
case ZEND_RETURN_BY_REF:
case ZEND_VERIFY_RETURN_TYPE:
msg = "Cannot return string offsets by reference";
break;
case ZEND_UNSET_DIM:
case ZEND_UNSET_OBJ:
msg = "Cannot unset string offsets";
break;
case ZEND_YIELD:
msg = "Cannot yield string offsets by reference";
break;
case ZEND_SEND_REF:
case ZEND_SEND_VAR_EX:
case ZEND_SEND_FUNC_ARG:
msg = "Only variables can be passed by reference";
break;
case ZEND_FE_RESET_RW:
msg = "Cannot iterate on string offsets by reference";
break;
EMPTY_SWITCH_DEFAULT_CASE();
}
break;
}
if (opline->op2_type == IS_VAR && opline->op2.var == var) {
ZEND_ASSERT(opline->opcode == ZEND_ASSIGN_REF);
msg = "Cannot create references to/from string offsets";
break;
}
break;
EMPTY_SWITCH_DEFAULT_CASE();
}
ZEND_ASSERT(msg != NULL);
zend_throw_error(NULL, "%s", msg);
}
static zend_never_inline ZEND_COLD void ZEND_FASTCALL zend_wrong_property_read(zval *object, zval *property)
{
zend_string *tmp_property_name;
zend_string *property_name = zval_get_tmp_string(property, &tmp_property_name);
zend_error(E_WARNING, "Attempt to read property \"%s\" on %s", ZSTR_VAL(property_name), zend_zval_type_name(object));
zend_tmp_string_release(tmp_property_name);
}
ZEND_API ZEND_COLD void ZEND_FASTCALL zend_deprecated_function(const zend_function *fbc)
{
if (fbc->common.scope) {
zend_error(E_DEPRECATED, "Method %s::%s() is deprecated",
ZSTR_VAL(fbc->common.scope->name),
ZSTR_VAL(fbc->common.function_name)
);
} else {
zend_error(E_DEPRECATED, "Function %s() is deprecated", ZSTR_VAL(fbc->common.function_name));
}
}
ZEND_API ZEND_COLD void ZEND_FASTCALL zend_false_to_array_deprecated(void)
{
zend_error(E_DEPRECATED, "Automatic conversion of false to array is deprecated");
}
static zend_never_inline void zend_assign_to_string_offset(zval *str, zval *dim, zval *value OPLINE_DC EXECUTE_DATA_DC)
{
zend_uchar c;
size_t string_len;
zend_long offset;
offset = zend_check_string_offset(dim, BP_VAR_W EXECUTE_DATA_CC);
/* Illegal offset assignment */
if (UNEXPECTED(EG(exception) != NULL)) {
if (UNEXPECTED(RETURN_VALUE_USED(opline))) {
ZVAL_UNDEF(EX_VAR(opline->result.var));
}
return;
}
if (offset < -(zend_long)Z_STRLEN_P(str)) {
/* Error on negative offset */
zend_error(E_WARNING, "Illegal string offset " ZEND_LONG_FMT, offset);
if (UNEXPECTED(RETURN_VALUE_USED(opline))) {
ZVAL_NULL(EX_VAR(opline->result.var));
}
return;
}
if (Z_TYPE_P(value) != IS_STRING) {
/* Convert to string, just the time to pick the 1st byte */
zend_string *tmp = zval_try_get_string_func(value);
if (UNEXPECTED(!tmp)) {
if (UNEXPECTED(RETURN_VALUE_USED(opline))) {
ZVAL_UNDEF(EX_VAR(opline->result.var));
}
return;
}
string_len = ZSTR_LEN(tmp);
c = (zend_uchar)ZSTR_VAL(tmp)[0];
zend_string_release_ex(tmp, 0);
} else {
string_len = Z_STRLEN_P(value);
c = (zend_uchar)Z_STRVAL_P(value)[0];
}
if (string_len != 1) {
if (string_len == 0) {
/* Error on empty input string */
zend_throw_error(NULL, "Cannot assign an empty string to a string offset");
if (UNEXPECTED(RETURN_VALUE_USED(opline))) {
ZVAL_NULL(EX_VAR(opline->result.var));
}
return;
}
zend_error(E_WARNING, "Only the first byte will be assigned to the string offset");
}
if (offset < 0) { /* Handle negative offset */
offset += (zend_long)Z_STRLEN_P(str);
}
if ((size_t)offset >= Z_STRLEN_P(str)) {
/* Extend string if needed */
zend_long old_len = Z_STRLEN_P(str);
ZVAL_NEW_STR(str, zend_string_extend(Z_STR_P(str), (size_t)offset + 1, 0));
memset(Z_STRVAL_P(str) + old_len, ' ', offset - old_len);
Z_STRVAL_P(str)[offset+1] = 0;
} else if (!Z_REFCOUNTED_P(str)) {
ZVAL_NEW_STR(str, zend_string_init(Z_STRVAL_P(str), Z_STRLEN_P(str), 0));
} else if (Z_REFCOUNT_P(str) > 1) {
Z_DELREF_P(str);
ZVAL_NEW_STR(str, zend_string_init(Z_STRVAL_P(str), Z_STRLEN_P(str), 0));
} else {
zend_string_forget_hash_val(Z_STR_P(str));
}
Z_STRVAL_P(str)[offset] = c;
if (UNEXPECTED(RETURN_VALUE_USED(opline))) {
/* Return the new character */
ZVAL_CHAR(EX_VAR(opline->result.var), c);
}
}
static zend_property_info *zend_get_prop_not_accepting_double(zend_reference *ref)
{
zend_property_info *prop;
ZEND_REF_FOREACH_TYPE_SOURCES(ref, prop) {
if (!(ZEND_TYPE_FULL_MASK(prop->type) & MAY_BE_DOUBLE)) {
return prop;
}
} ZEND_REF_FOREACH_TYPE_SOURCES_END();
return NULL;
}
static ZEND_COLD zend_long zend_throw_incdec_ref_error(
zend_reference *ref, zend_property_info *error_prop OPLINE_DC)
{
zend_string *type_str = zend_type_to_string(error_prop->type);
if (ZEND_IS_INCREMENT(opline->opcode)) {
zend_type_error(
"Cannot increment a reference held by property %s::$%s of type %s past its maximal value",
ZSTR_VAL(error_prop->ce->name),
zend_get_unmangled_property_name(error_prop->name),
ZSTR_VAL(type_str));
zend_string_release(type_str);
return ZEND_LONG_MAX;
} else {
zend_type_error(
"Cannot decrement a reference held by property %s::$%s of type %s past its minimal value",
ZSTR_VAL(error_prop->ce->name),
zend_get_unmangled_property_name(error_prop->name),
ZSTR_VAL(type_str));
zend_string_release(type_str);
return ZEND_LONG_MIN;
}
}
static ZEND_COLD zend_long zend_throw_incdec_prop_error(zend_property_info *prop OPLINE_DC) {
zend_string *type_str = zend_type_to_string(prop->type);
if (ZEND_IS_INCREMENT(opline->opcode)) {
zend_type_error("Cannot increment property %s::$%s of type %s past its maximal value",
ZSTR_VAL(prop->ce->name),
zend_get_unmangled_property_name(prop->name),
ZSTR_VAL(type_str));
zend_string_release(type_str);
return ZEND_LONG_MAX;
} else {
zend_type_error("Cannot decrement property %s::$%s of type %s past its minimal value",
ZSTR_VAL(prop->ce->name),
zend_get_unmangled_property_name(prop->name),
ZSTR_VAL(type_str));
zend_string_release(type_str);
return ZEND_LONG_MIN;
}
}
static void zend_incdec_typed_ref(zend_reference *ref, zval *copy OPLINE_DC EXECUTE_DATA_DC)
{
zval tmp;
zval *var_ptr = &ref->val;
if (!copy) {
copy = &tmp;
}
ZVAL_COPY(copy, var_ptr);
if (ZEND_IS_INCREMENT(opline->opcode)) {
increment_function(var_ptr);
} else {
decrement_function(var_ptr);
}
if (UNEXPECTED(Z_TYPE_P(var_ptr) == IS_DOUBLE) && Z_TYPE_P(copy) == IS_LONG) {
zend_property_info *error_prop = zend_get_prop_not_accepting_double(ref);
if (UNEXPECTED(error_prop)) {
zend_long val = zend_throw_incdec_ref_error(ref, error_prop OPLINE_CC);
ZVAL_LONG(var_ptr, val);
}
} else if (UNEXPECTED(!zend_verify_ref_assignable_zval(ref, var_ptr, EX_USES_STRICT_TYPES()))) {
zval_ptr_dtor(var_ptr);
ZVAL_COPY_VALUE(var_ptr, copy);
ZVAL_UNDEF(copy);
} else if (copy == &tmp) {
zval_ptr_dtor(&tmp);
}
}
static void zend_incdec_typed_prop(zend_property_info *prop_info, zval *var_ptr, zval *copy OPLINE_DC EXECUTE_DATA_DC)
{
zval tmp;
if (!copy) {
copy = &tmp;
}
ZVAL_COPY(copy, var_ptr);
if (ZEND_IS_INCREMENT(opline->opcode)) {
increment_function(var_ptr);
} else {
decrement_function(var_ptr);
}
if (UNEXPECTED(Z_TYPE_P(var_ptr) == IS_DOUBLE) && Z_TYPE_P(copy) == IS_LONG) {
if (!(ZEND_TYPE_FULL_MASK(prop_info->type) & MAY_BE_DOUBLE)) {
zend_long val = zend_throw_incdec_prop_error(prop_info OPLINE_CC);
ZVAL_LONG(var_ptr, val);
}
} else if (UNEXPECTED(!zend_verify_property_type(prop_info, var_ptr, EX_USES_STRICT_TYPES()))) {
zval_ptr_dtor(var_ptr);
ZVAL_COPY_VALUE(var_ptr, copy);
ZVAL_UNDEF(copy);
} else if (copy == &tmp) {
zval_ptr_dtor(&tmp);
}
}
static void zend_pre_incdec_property_zval(zval *prop, zend_property_info *prop_info OPLINE_DC EXECUTE_DATA_DC)
{
if (EXPECTED(Z_TYPE_P(prop) == IS_LONG)) {
if (ZEND_IS_INCREMENT(opline->opcode)) {
fast_long_increment_function(prop);
} else {
fast_long_decrement_function(prop);
}
if (UNEXPECTED(Z_TYPE_P(prop) != IS_LONG) && UNEXPECTED(prop_info)
&& !(ZEND_TYPE_FULL_MASK(prop_info->type) & MAY_BE_DOUBLE)) {
zend_long val = zend_throw_incdec_prop_error(prop_info OPLINE_CC);
ZVAL_LONG(prop, val);
}
} else {
do {
if (Z_ISREF_P(prop)) {
zend_reference *ref = Z_REF_P(prop);
prop = Z_REFVAL_P(prop);
if (UNEXPECTED(ZEND_REF_HAS_TYPE_SOURCES(ref))) {
zend_incdec_typed_ref(ref, NULL OPLINE_CC EXECUTE_DATA_CC);
break;
}
}
if (UNEXPECTED(prop_info)) {
zend_incdec_typed_prop(prop_info, prop, NULL OPLINE_CC EXECUTE_DATA_CC);
} else if (ZEND_IS_INCREMENT(opline->opcode)) {
increment_function(prop);
} else {
decrement_function(prop);
}
} while (0);
}
if (UNEXPECTED(RETURN_VALUE_USED(opline))) {
ZVAL_COPY(EX_VAR(opline->result.var), prop);
}
}
static void zend_post_incdec_property_zval(zval *prop, zend_property_info *prop_info OPLINE_DC EXECUTE_DATA_DC)
{
if (EXPECTED(Z_TYPE_P(prop) == IS_LONG)) {
ZVAL_LONG(EX_VAR(opline->result.var), Z_LVAL_P(prop));
if (ZEND_IS_INCREMENT(opline->opcode)) {
fast_long_increment_function(prop);
} else {
fast_long_decrement_function(prop);
}
if (UNEXPECTED(Z_TYPE_P(prop) != IS_LONG) && UNEXPECTED(prop_info)
&& !(ZEND_TYPE_FULL_MASK(prop_info->type) & MAY_BE_DOUBLE)) {
zend_long val = zend_throw_incdec_prop_error(prop_info OPLINE_CC);
ZVAL_LONG(prop, val);
}
} else {
if (Z_ISREF_P(prop)) {
zend_reference *ref = Z_REF_P(prop);
prop = Z_REFVAL_P(prop);
if (ZEND_REF_HAS_TYPE_SOURCES(ref)) {
zend_incdec_typed_ref(ref, EX_VAR(opline->result.var) OPLINE_CC EXECUTE_DATA_CC);
return;
}
}
if (UNEXPECTED(prop_info)) {
zend_incdec_typed_prop(prop_info, prop, EX_VAR(opline->result.var) OPLINE_CC EXECUTE_DATA_CC);
} else {
ZVAL_COPY(EX_VAR(opline->result.var), prop);
if (ZEND_IS_INCREMENT(opline->opcode)) {
increment_function(prop);
} else {
decrement_function(prop);
}
}
}
}
static zend_never_inline void zend_post_incdec_overloaded_property(zend_object *object, zend_string *name, void **cache_slot OPLINE_DC EXECUTE_DATA_DC)
{
zval rv;
zval *z;
zval z_copy;
GC_ADDREF(object);
z =object->handlers->read_property(object, name, BP_VAR_R, cache_slot, &rv);
if (UNEXPECTED(EG(exception))) {
OBJ_RELEASE(object);
ZVAL_UNDEF(EX_VAR(opline->result.var));
return;
}
ZVAL_COPY_DEREF(&z_copy, z);
ZVAL_COPY(EX_VAR(opline->result.var), &z_copy);
if (ZEND_IS_INCREMENT(opline->opcode)) {
increment_function(&z_copy);
} else {
decrement_function(&z_copy);
}
object->handlers->write_property(object, name, &z_copy, cache_slot);
OBJ_RELEASE(object);
zval_ptr_dtor(&z_copy);
if (z == &rv) {
zval_ptr_dtor(z);
}
}
static zend_never_inline void zend_pre_incdec_overloaded_property(zend_object *object, zend_string *name, void **cache_slot OPLINE_DC EXECUTE_DATA_DC)
{
zval rv;
zval *z;
zval z_copy;
GC_ADDREF(object);
z = object->handlers->read_property(object, name, BP_VAR_R, cache_slot, &rv);
if (UNEXPECTED(EG(exception))) {
OBJ_RELEASE(object);
if (UNEXPECTED(RETURN_VALUE_USED(opline))) {
ZVAL_NULL(EX_VAR(opline->result.var));
}
return;
}
ZVAL_COPY_DEREF(&z_copy, z);
if (ZEND_IS_INCREMENT(opline->opcode)) {
increment_function(&z_copy);
} else {
decrement_function(&z_copy);
}
if (UNEXPECTED(RETURN_VALUE_USED(opline))) {
ZVAL_COPY(EX_VAR(opline->result.var), &z_copy);
}
object->handlers->write_property(object, name, &z_copy, cache_slot);
OBJ_RELEASE(object);
zval_ptr_dtor(&z_copy);
if (z == &rv) {
zval_ptr_dtor(z);
}
}
static zend_never_inline void zend_assign_op_overloaded_property(zend_object *object, zend_string *name, void **cache_slot, zval *value OPLINE_DC EXECUTE_DATA_DC)
{
zval *z;
zval rv, res;
GC_ADDREF(object);
z = object->handlers->read_property(object, name, BP_VAR_R, cache_slot, &rv);
if (UNEXPECTED(EG(exception))) {
OBJ_RELEASE(object);
if (UNEXPECTED(RETURN_VALUE_USED(opline))) {
ZVAL_UNDEF(EX_VAR(opline->result.var));
}
return;
}
if (zend_binary_op(&res, z, value OPLINE_CC) == SUCCESS) {
object->handlers->write_property(object, name, &res, cache_slot);
}
if (UNEXPECTED(RETURN_VALUE_USED(opline))) {
ZVAL_COPY(EX_VAR(opline->result.var), &res);
}
if (z == &rv) {
zval_ptr_dtor(z);
}
zval_ptr_dtor(&res);
OBJ_RELEASE(object);
}
/* Utility Functions for Extensions */
static void zend_extension_statement_handler(const zend_extension *extension, zend_execute_data *frame)
{
if (extension->statement_handler) {
extension->statement_handler(frame);
}
}
static void zend_extension_fcall_begin_handler(const zend_extension *extension, zend_execute_data *frame)
{
if (extension->fcall_begin_handler) {
extension->fcall_begin_handler(frame);
}
}
static void zend_extension_fcall_end_handler(const zend_extension *extension, zend_execute_data *frame)
{
if (extension->fcall_end_handler) {
extension->fcall_end_handler(frame);
}
}
static zend_always_inline HashTable *zend_get_target_symbol_table(int fetch_type EXECUTE_DATA_DC)
{
HashTable *ht;
if (EXPECTED(fetch_type & (ZEND_FETCH_GLOBAL_LOCK | ZEND_FETCH_GLOBAL))) {
ht = &EG(symbol_table);
} else {
ZEND_ASSERT(fetch_type & ZEND_FETCH_LOCAL);
if (!(EX_CALL_INFO() & ZEND_CALL_HAS_SYMBOL_TABLE)) {
zend_rebuild_symbol_table();
}
ht = EX(symbol_table);
}
return ht;
}
static zend_never_inline ZEND_COLD void ZEND_FASTCALL zend_undefined_offset(zend_long lval)
{
zend_error(E_WARNING, "Undefined array key " ZEND_LONG_FMT, lval);
}
static zend_never_inline ZEND_COLD void ZEND_FASTCALL zend_undefined_index(const zend_string *offset)
{
zend_error(E_WARNING, "Undefined array key \"%s\"", ZSTR_VAL(offset));
}
ZEND_API ZEND_COLD zval* ZEND_FASTCALL zend_undefined_offset_write(HashTable *ht, zend_long lval)
{
/* The array may be destroyed while throwing the notice.
* Temporarily increase the refcount to detect this situation. */
if (!(GC_FLAGS(ht) & IS_ARRAY_IMMUTABLE)) {
GC_ADDREF(ht);
}
zend_undefined_offset(lval);
if (!(GC_FLAGS(ht) & IS_ARRAY_IMMUTABLE) && !GC_DELREF(ht)) {
zend_array_destroy(ht);
return NULL;
}
if (EG(exception)) {
return NULL;
}
return zend_hash_index_add_new(ht, lval, &EG(uninitialized_zval));
}
ZEND_API ZEND_COLD zval* ZEND_FASTCALL zend_undefined_index_write(HashTable *ht, zend_string *offset)
{
zval *retval;
/* The array may be destroyed while throwing the notice.
* Temporarily increase the refcount to detect this situation. */
if (!(GC_FLAGS(ht) & IS_ARRAY_IMMUTABLE)) {
GC_ADDREF(ht);
}
/* Key may be released while throwing the undefined index warning. */
zend_string_addref(offset);
zend_undefined_index(offset);
if (!(GC_FLAGS(ht) & IS_ARRAY_IMMUTABLE) && !GC_DELREF(ht)) {
zend_array_destroy(ht);
retval = NULL;
} else if (EG(exception)) {
retval = NULL;
} else {
retval = zend_hash_add_new(ht, offset, &EG(uninitialized_zval));
}
zend_string_release(offset);
return retval;
}
static zend_never_inline ZEND_COLD void ZEND_FASTCALL zend_undefined_method(const zend_class_entry *ce, const zend_string *method)
{
zend_throw_error(NULL, "Call to undefined method %s::%s()", ZSTR_VAL(ce->name), ZSTR_VAL(method));
}
static zend_never_inline ZEND_COLD void ZEND_FASTCALL zend_invalid_method_call(zval *object, zval *function_name)
{
zend_throw_error(NULL, "Call to a member function %s() on %s",
Z_STRVAL_P(function_name), zend_zval_type_name(object));
}
static zend_never_inline ZEND_COLD void ZEND_FASTCALL zend_non_static_method_call(const zend_function *fbc)
{
zend_throw_error(
zend_ce_error,
"Non-static method %s::%s() cannot be called statically",
ZSTR_VAL(fbc->common.scope->name), ZSTR_VAL(fbc->common.function_name));
}
ZEND_COLD void ZEND_FASTCALL zend_param_must_be_ref(const zend_function *func, uint32_t arg_num)
{
const char *arg_name = get_function_arg_name(func, arg_num);
zend_error(E_WARNING, "%s%s%s(): Argument #%d%s%s%s must be passed by reference, value given",
func->common.scope ? ZSTR_VAL(func->common.scope->name) : "",
func->common.scope ? "::" : "",
ZSTR_VAL(func->common.function_name),
arg_num,
arg_name ? " ($" : "",
arg_name ? arg_name : "",
arg_name ? ")" : ""
);
}
static zend_never_inline ZEND_COLD void ZEND_FASTCALL zend_use_scalar_as_array(void)
{
zend_throw_error(NULL, "Cannot use a scalar value as an array");
}
static zend_never_inline ZEND_COLD void ZEND_FASTCALL zend_cannot_add_element(void)
{
zend_throw_error(NULL, "Cannot add element to the array as the next element is already occupied");
}
ZEND_API ZEND_COLD void ZEND_FASTCALL zend_use_resource_as_offset(const zval *dim)
{
zend_error(E_WARNING,
"Resource ID#" ZEND_LONG_FMT " used as offset, casting to integer (" ZEND_LONG_FMT ")",
Z_RES_HANDLE_P(dim), Z_RES_HANDLE_P(dim));
}
static zend_never_inline ZEND_COLD void ZEND_FASTCALL zend_use_new_element_for_string(void)
{
zend_throw_error(NULL, "[] operator not supported for strings");
}
static ZEND_COLD void zend_binary_assign_op_dim_slow(zval *container, zval *dim OPLINE_DC EXECUTE_DATA_DC)
{
if (UNEXPECTED(Z_TYPE_P(container) == IS_STRING)) {
if (opline->op2_type == IS_UNUSED) {
zend_use_new_element_for_string();
} else {
zend_check_string_offset(dim, BP_VAR_RW EXECUTE_DATA_CC);
zend_wrong_string_offset(EXECUTE_DATA_C);
}
} else {
zend_use_scalar_as_array();
}
}
static zend_never_inline zend_uchar slow_index_convert(HashTable *ht, const zval *dim, zend_value *value EXECUTE_DATA_DC)
{
switch (Z_TYPE_P(dim)) {
case IS_UNDEF: {
/* The array may be destroyed while throwing the notice.
* Temporarily increase the refcount to detect this situation. */
if (!(GC_FLAGS(ht) & IS_ARRAY_IMMUTABLE)) {
GC_ADDREF(ht);
}
ZVAL_UNDEFINED_OP2();
if (!(GC_FLAGS(ht) & IS_ARRAY_IMMUTABLE) && !GC_DELREF(ht)) {
zend_array_destroy(ht);
return IS_NULL;
}
if (EG(exception)) {
return IS_NULL;
}
ZEND_FALLTHROUGH;
}
case IS_NULL:
value->str = ZSTR_EMPTY_ALLOC();
return IS_STRING;
case IS_DOUBLE:
value->lval = zend_dval_to_lval_safe(Z_DVAL_P(dim));
return IS_LONG;
case IS_RESOURCE:
zend_use_resource_as_offset(dim);
value->lval = Z_RES_HANDLE_P(dim);
return IS_LONG;
case IS_FALSE:
value->lval = 0;
return IS_LONG;
case IS_TRUE:
value->lval = 1;
return IS_LONG;
default:
zend_illegal_offset();
return IS_NULL;
}
}
static zend_always_inline zval *zend_fetch_dimension_address_inner(HashTable *ht, const zval *dim, int dim_type, int type EXECUTE_DATA_DC)
{
zval *retval = NULL;
zend_string *offset_key;
zend_ulong hval;
try_again:
if (EXPECTED(Z_TYPE_P(dim) == IS_LONG)) {
hval = Z_LVAL_P(dim);
num_index:
if (type != BP_VAR_W) {
ZEND_HASH_INDEX_FIND(ht, hval, retval, num_undef);
return retval;
num_undef:
switch (type) {
case BP_VAR_R:
zend_undefined_offset(hval);
ZEND_FALLTHROUGH;
case BP_VAR_UNSET:
case BP_VAR_IS:
retval = &EG(uninitialized_zval);
break;
case BP_VAR_RW:
retval = zend_undefined_offset_write(ht, hval);
break;
}
} else {
ZEND_HASH_INDEX_LOOKUP(ht, hval, retval);
}
} else if (EXPECTED(Z_TYPE_P(dim) == IS_STRING)) {
offset_key = Z_STR_P(dim);
if (ZEND_CONST_COND(dim_type != IS_CONST, 1)) {
if (ZEND_HANDLE_NUMERIC(offset_key, hval)) {
goto num_index;
}
}
str_index:
if (type != BP_VAR_W) {
retval = zend_hash_find_ex(ht, offset_key, ZEND_CONST_COND(dim_type == IS_CONST, 0));
if (!retval) {
switch (type) {
case BP_VAR_R:
zend_undefined_index(offset_key);
ZEND_FALLTHROUGH;
case BP_VAR_UNSET:
case BP_VAR_IS:
retval = &EG(uninitialized_zval);
break;
case BP_VAR_RW:
retval = zend_undefined_index_write(ht, offset_key);
break;
}
}
} else {
retval = zend_hash_lookup(ht, offset_key);
}
} else if (EXPECTED(Z_TYPE_P(dim) == IS_REFERENCE)) {
dim = Z_REFVAL_P(dim);
goto try_again;
} else {
zend_value val;
zend_uchar t = slow_index_convert(ht, dim, &val EXECUTE_DATA_CC);
if (t == IS_STRING) {
offset_key = val.str;
goto str_index;
} else if (t == IS_LONG) {
hval = val.lval;
goto num_index;
} else {
retval = (type == BP_VAR_W || type == BP_VAR_RW) ?
NULL : &EG(uninitialized_zval);
}
}
return retval;
}
static zend_never_inline zval* ZEND_FASTCALL zend_fetch_dimension_address_inner_W(HashTable *ht, const zval *dim EXECUTE_DATA_DC)
{
return zend_fetch_dimension_address_inner(ht, dim, IS_TMP_VAR, BP_VAR_W EXECUTE_DATA_CC);
}
static zend_never_inline zval* ZEND_FASTCALL zend_fetch_dimension_address_inner_W_CONST(HashTable *ht, const zval *dim EXECUTE_DATA_DC)
{
return zend_fetch_dimension_address_inner(ht, dim, IS_CONST, BP_VAR_W EXECUTE_DATA_CC);
}
static zend_never_inline zval* ZEND_FASTCALL zend_fetch_dimension_address_inner_RW(HashTable *ht, const zval *dim EXECUTE_DATA_DC)
{
return zend_fetch_dimension_address_inner(ht, dim, IS_TMP_VAR, BP_VAR_RW EXECUTE_DATA_CC);
}
static zend_never_inline zval* ZEND_FASTCALL zend_fetch_dimension_address_inner_RW_CONST(HashTable *ht, const zval *dim EXECUTE_DATA_DC)
{
return zend_fetch_dimension_address_inner(ht, dim, IS_CONST, BP_VAR_RW EXECUTE_DATA_CC);
}
static zend_always_inline void zend_fetch_dimension_address(zval *result, zval *container, zval *dim, int dim_type, int type EXECUTE_DATA_DC)
{
zval *retval;
if (EXPECTED(Z_TYPE_P(container) == IS_ARRAY)) {
try_array:
SEPARATE_ARRAY(container);
fetch_from_array:
if (dim == NULL) {
retval = zend_hash_next_index_insert(Z_ARRVAL_P(container), &EG(uninitialized_zval));
if (UNEXPECTED(retval == NULL)) {
zend_cannot_add_element();
ZVAL_UNDEF(result);
return;
}
} else {
retval = zend_fetch_dimension_address_inner(Z_ARRVAL_P(container), dim, dim_type, type EXECUTE_DATA_CC);
if (UNEXPECTED(!retval)) {
/* This may fail without throwing if the array was modified while throwing an
* undefined index error. */
ZVAL_NULL(result);
return;
}
}
ZVAL_INDIRECT(result, retval);
return;
} else if (EXPECTED(Z_TYPE_P(container) == IS_REFERENCE)) {
zend_reference *ref = Z_REF_P(container);
container = Z_REFVAL_P(container);
if (EXPECTED(Z_TYPE_P(container) == IS_ARRAY)) {
goto try_array;
} else if (EXPECTED(Z_TYPE_P(container) <= IS_FALSE)) {
if (type != BP_VAR_UNSET) {
if (ZEND_REF_HAS_TYPE_SOURCES(ref)) {
if (UNEXPECTED(!zend_verify_ref_array_assignable(ref))) {
ZVAL_UNDEF(result);
return;
}
}
array_init(container);
goto fetch_from_array;
} else {
goto return_null;
}
}
}
if (UNEXPECTED(Z_TYPE_P(container) == IS_STRING)) {
if (dim == NULL) {
zend_use_new_element_for_string();
} else {
zend_check_string_offset(dim, type EXECUTE_DATA_CC);
zend_wrong_string_offset(EXECUTE_DATA_C);
}
ZVAL_UNDEF(result);
} else if (EXPECTED(Z_TYPE_P(container) == IS_OBJECT)) {
if (ZEND_CONST_COND(dim_type == IS_CV, dim != NULL) && UNEXPECTED(Z_TYPE_P(dim) == IS_UNDEF)) {
dim = ZVAL_UNDEFINED_OP2();
}
if (dim_type == IS_CONST && Z_EXTRA_P(dim) == ZEND_EXTRA_VALUE) {
dim++;
}
retval = Z_OBJ_HT_P(container)->read_dimension(Z_OBJ_P(container), dim, type, result);
if (UNEXPECTED(retval == &EG(uninitialized_zval))) {
zend_class_entry *ce = Z_OBJCE_P(container);
ZVAL_NULL(result);
zend_error(E_NOTICE, "Indirect modification of overloaded element of %s has no effect", ZSTR_VAL(ce->name));
} else if (EXPECTED(retval && Z_TYPE_P(retval) != IS_UNDEF)) {
if (!Z_ISREF_P(retval)) {
if (result != retval) {
ZVAL_COPY(result, retval);
retval = result;
}
if (Z_TYPE_P(retval) != IS_OBJECT) {
zend_class_entry *ce = Z_OBJCE_P(container);
zend_error(E_NOTICE, "Indirect modification of overloaded element of %s has no effect", ZSTR_VAL(ce->name));
}
} else if (UNEXPECTED(Z_REFCOUNT_P(retval) == 1)) {
ZVAL_UNREF(retval);
}
if (result != retval) {
ZVAL_INDIRECT(result, retval);
}
} else {
ZEND_ASSERT(EG(exception) && "read_dimension() returned NULL without exception");
ZVAL_UNDEF(result);
}
} else {
if (EXPECTED(Z_TYPE_P(container) <= IS_FALSE)) {
if (type != BP_VAR_W && UNEXPECTED(Z_TYPE_P(container) == IS_UNDEF)) {
ZVAL_UNDEFINED_OP1();
}
if (Z_TYPE_P(container) == IS_FALSE) {
zend_false_to_array_deprecated();
}
if (type != BP_VAR_UNSET) {
array_init(container);
goto fetch_from_array;
} else {
return_null:
/* for read-mode only */
if (ZEND_CONST_COND(dim_type == IS_CV, dim != NULL) && UNEXPECTED(Z_TYPE_P(dim) == IS_UNDEF)) {
ZVAL_UNDEFINED_OP2();
}
ZVAL_NULL(result);
}
} else {
if (type == BP_VAR_UNSET) {
zend_throw_error(NULL, "Cannot unset offset in a non-array variable");
ZVAL_UNDEF(result);
} else {
zend_use_scalar_as_array();
ZVAL_UNDEF(result);
}
}
}
}
static zend_never_inline void ZEND_FASTCALL zend_fetch_dimension_address_W(zval *container_ptr, zval *dim, int dim_type OPLINE_DC EXECUTE_DATA_DC)
{
zval *result = EX_VAR(opline->result.var);
zend_fetch_dimension_address(result, container_ptr, dim, dim_type, BP_VAR_W EXECUTE_DATA_CC);
}
static zend_never_inline void ZEND_FASTCALL zend_fetch_dimension_address_RW(zval *container_ptr, zval *dim, int dim_type OPLINE_DC EXECUTE_DATA_DC)
{
zval *result = EX_VAR(opline->result.var);
zend_fetch_dimension_address(result, container_ptr, dim, dim_type, BP_VAR_RW EXECUTE_DATA_CC);
}
static zend_never_inline void ZEND_FASTCALL zend_fetch_dimension_address_UNSET(zval *container_ptr, zval *dim, int dim_type OPLINE_DC EXECUTE_DATA_DC)
{
zval *result = EX_VAR(opline->result.var);
zend_fetch_dimension_address(result, container_ptr, dim, dim_type, BP_VAR_UNSET EXECUTE_DATA_CC);
}
static zend_always_inline void zend_fetch_dimension_address_read(zval *result, zval *container, zval *dim, int dim_type, int type, bool is_list, int slow EXECUTE_DATA_DC)
{
zval *retval;
if (!slow) {
if (EXPECTED(Z_TYPE_P(container) == IS_ARRAY)) {
try_array:
retval = zend_fetch_dimension_address_inner(Z_ARRVAL_P(container), dim, dim_type, type EXECUTE_DATA_CC);
ZVAL_COPY_DEREF(result, retval);
return;
} else if (EXPECTED(Z_TYPE_P(container) == IS_REFERENCE)) {
container = Z_REFVAL_P(container);
if (EXPECTED(Z_TYPE_P(container) == IS_ARRAY)) {
goto try_array;
}
}
}
if (!is_list && EXPECTED(Z_TYPE_P(container) == IS_STRING)) {
zend_long offset;
try_string_offset:
if (UNEXPECTED(Z_TYPE_P(dim) != IS_LONG)) {
switch (Z_TYPE_P(dim)) {
case IS_STRING:
{
bool trailing_data = false;
/* For BC reasons we allow errors so that we can warn on leading numeric string */
if (IS_LONG == is_numeric_string_ex(Z_STRVAL_P(dim), Z_STRLEN_P(dim), &offset,
NULL, /* allow errors */ true, NULL, &trailing_data)) {
if (UNEXPECTED(trailing_data)) {
zend_error(E_WARNING, "Illegal string offset \"%s\"", Z_STRVAL_P(dim));
}
goto out;
}
if (type == BP_VAR_IS) {
ZVAL_NULL(result);
return;
}
zend_illegal_string_offset(dim);
ZVAL_NULL(result);
return;
}
case IS_UNDEF:
ZVAL_UNDEFINED_OP2();
ZEND_FALLTHROUGH;
case IS_DOUBLE:
case IS_NULL:
case IS_FALSE:
case IS_TRUE:
if (type != BP_VAR_IS) {
zend_error(E_WARNING, "String offset cast occurred");
}
break;
case IS_REFERENCE:
dim = Z_REFVAL_P(dim);
goto try_string_offset;
default:
zend_illegal_string_offset(dim);
ZVAL_NULL(result);
return;
}
offset = zval_get_long_func(dim, /* is_strict */ false);
} else {
offset = Z_LVAL_P(dim);
}
out:
if (UNEXPECTED(Z_STRLEN_P(container) < ((offset < 0) ? -(size_t)offset : ((size_t)offset + 1)))) {
if (type != BP_VAR_IS) {
zend_error(E_WARNING, "Uninitialized string offset " ZEND_LONG_FMT, offset);
ZVAL_EMPTY_STRING(result);
} else {
ZVAL_NULL(result);
}
} else {
zend_uchar c;
zend_long real_offset;
real_offset = (UNEXPECTED(offset < 0)) /* Handle negative offset */
? (zend_long)Z_STRLEN_P(container) + offset : offset;
c = (zend_uchar)Z_STRVAL_P(container)[real_offset];
ZVAL_CHAR(result, c);
}
} else if (EXPECTED(Z_TYPE_P(container) == IS_OBJECT)) {
if (ZEND_CONST_COND(dim_type == IS_CV, 1) && UNEXPECTED(Z_TYPE_P(dim) == IS_UNDEF)) {
dim = ZVAL_UNDEFINED_OP2();
}
if (dim_type == IS_CONST && Z_EXTRA_P(dim) == ZEND_EXTRA_VALUE) {
dim++;
}
retval = Z_OBJ_HT_P(container)->read_dimension(Z_OBJ_P(container), dim, type, result);
ZEND_ASSERT(result != NULL);
if (retval) {
if (result != retval) {
ZVAL_COPY_DEREF(result, retval);
} else if (UNEXPECTED(Z_ISREF_P(retval))) {
zend_unwrap_reference(result);
}
} else {
ZVAL_NULL(result);
}
} else {
if (type != BP_VAR_IS && UNEXPECTED(Z_TYPE_P(container) == IS_UNDEF)) {
container = ZVAL_UNDEFINED_OP1();
}
if (ZEND_CONST_COND(dim_type == IS_CV, 1) && UNEXPECTED(Z_TYPE_P(dim) == IS_UNDEF)) {
ZVAL_UNDEFINED_OP2();
}
if (!is_list && type != BP_VAR_IS) {
zend_error(E_WARNING, "Trying to access array offset on value of type %s",
zend_zval_type_name(container));
}
ZVAL_NULL(result);
}
}
static zend_never_inline void ZEND_FASTCALL zend_fetch_dimension_address_read_R(zval *container, zval *dim, int dim_type OPLINE_DC EXECUTE_DATA_DC)
{
zval *result = EX_VAR(opline->result.var);
zend_fetch_dimension_address_read(result, container, dim, dim_type, BP_VAR_R, 0, 0 EXECUTE_DATA_CC);
}
static zend_never_inline void zend_fetch_dimension_address_read_R_slow(zval *container, zval *dim OPLINE_DC EXECUTE_DATA_DC)
{
zval *result = EX_VAR(opline->result.var);
zend_fetch_dimension_address_read(result, container, dim, IS_CV, BP_VAR_R, 0, 1 EXECUTE_DATA_CC);
}
static zend_never_inline void ZEND_FASTCALL zend_fetch_dimension_address_read_IS(zval *container, zval *dim, int dim_type OPLINE_DC EXECUTE_DATA_DC)
{
zval *result = EX_VAR(opline->result.var);
zend_fetch_dimension_address_read(result, container, dim, dim_type, BP_VAR_IS, 0, 0 EXECUTE_DATA_CC);
}
static zend_never_inline void ZEND_FASTCALL zend_fetch_dimension_address_LIST_r(zval *container, zval *dim, int dim_type OPLINE_DC EXECUTE_DATA_DC)
{
zval *result = EX_VAR(opline->result.var);
zend_fetch_dimension_address_read(result, container, dim, dim_type, BP_VAR_R, 1, 0 EXECUTE_DATA_CC);
}
ZEND_API void zend_fetch_dimension_const(zval *result, zval *container, zval *dim, int type)
{
zend_fetch_dimension_address_read(result, container, dim, IS_TMP_VAR, type, 0, 0 NO_EXECUTE_DATA_CC);
}
static zend_never_inline zval* ZEND_FASTCALL zend_find_array_dim_slow(HashTable *ht, zval *offset EXECUTE_DATA_DC)
{
zend_ulong hval;
if (Z_TYPE_P(offset) == IS_DOUBLE) {
hval = zend_dval_to_lval_safe(Z_DVAL_P(offset));
num_idx:
return zend_hash_index_find(ht, hval);
} else if (Z_TYPE_P(offset) == IS_NULL) {
str_idx:
return zend_hash_find_known_hash(ht, ZSTR_EMPTY_ALLOC());
} else if (Z_TYPE_P(offset) == IS_FALSE) {
hval = 0;
goto num_idx;
} else if (Z_TYPE_P(offset) == IS_TRUE) {
hval = 1;
goto num_idx;
} else if (Z_TYPE_P(offset) == IS_RESOURCE) {
zend_use_resource_as_offset(offset);
hval = Z_RES_HANDLE_P(offset);
goto num_idx;
} else if (/*OP2_TYPE == IS_CV &&*/ Z_TYPE_P(offset) == IS_UNDEF) {
ZVAL_UNDEFINED_OP2();
goto str_idx;
} else {
zend_type_error("Illegal offset type in isset or empty");
return NULL;
}
}
static zend_never_inline bool ZEND_FASTCALL zend_isset_dim_slow(zval *container, zval *offset EXECUTE_DATA_DC)
{
if (/*OP2_TYPE == IS_CV &&*/ UNEXPECTED(Z_TYPE_P(offset) == IS_UNDEF)) {
offset = ZVAL_UNDEFINED_OP2();
}
if (/*OP1_TYPE != IS_CONST &&*/ EXPECTED(Z_TYPE_P(container) == IS_OBJECT)) {
return Z_OBJ_HT_P(container)->has_dimension(Z_OBJ_P(container), offset, 0);
} else if (EXPECTED(Z_TYPE_P(container) == IS_STRING)) { /* string offsets */
zend_long lval;
if (EXPECTED(Z_TYPE_P(offset) == IS_LONG)) {
lval = Z_LVAL_P(offset);
str_offset:
if (UNEXPECTED(lval < 0)) { /* Handle negative offset */
lval += (zend_long)Z_STRLEN_P(container);
}
if (EXPECTED(lval >= 0) && (size_t)lval < Z_STRLEN_P(container)) {
return 1;
} else {
return 0;
}
} else {
/*if (OP2_TYPE & (IS_CV|IS_VAR)) {*/
ZVAL_DEREF(offset);
/*}*/
if (Z_TYPE_P(offset) < IS_STRING /* simple scalar types */
|| (Z_TYPE_P(offset) == IS_STRING /* or numeric string */
&& IS_LONG == is_numeric_string(Z_STRVAL_P(offset), Z_STRLEN_P(offset), NULL, NULL, 0))) {
lval = zval_get_long_ex(offset, /* is_strict */ true);
goto str_offset;
}
return 0;
}
} else {
return 0;
}
}
static zend_never_inline bool ZEND_FASTCALL zend_isempty_dim_slow(zval *container, zval *offset EXECUTE_DATA_DC)
{
if (/*OP2_TYPE == IS_CV &&*/ UNEXPECTED(Z_TYPE_P(offset) == IS_UNDEF)) {
offset = ZVAL_UNDEFINED_OP2();
}
if (/*OP1_TYPE != IS_CONST &&*/ EXPECTED(Z_TYPE_P(container) == IS_OBJECT)) {
return !Z_OBJ_HT_P(container)->has_dimension(Z_OBJ_P(container), offset, 1);
} else if (EXPECTED(Z_TYPE_P(container) == IS_STRING)) { /* string offsets */
zend_long lval;
if (EXPECTED(Z_TYPE_P(offset) == IS_LONG)) {
lval = Z_LVAL_P(offset);
str_offset:
if (UNEXPECTED(lval < 0)) { /* Handle negative offset */
lval += (zend_long)Z_STRLEN_P(container);
}
if (EXPECTED(lval >= 0) && (size_t)lval < Z_STRLEN_P(container)) {
return (Z_STRVAL_P(container)[lval] == '0');
} else {
return 1;
}
} else {
/*if (OP2_TYPE & (IS_CV|IS_VAR)) {*/
ZVAL_DEREF(offset);
/*}*/
if (Z_TYPE_P(offset) < IS_STRING /* simple scalar types */
|| (Z_TYPE_P(offset) == IS_STRING /* or numeric string */
&& IS_LONG == is_numeric_string(Z_STRVAL_P(offset), Z_STRLEN_P(offset), NULL, NULL, 0))) {
lval = zval_get_long_ex(offset, /* is_strict */ true);
goto str_offset;
}
return 1;
}
} else {
return 1;
}
}
static zend_never_inline bool ZEND_FASTCALL zend_array_key_exists_fast(HashTable *ht, zval *key OPLINE_DC EXECUTE_DATA_DC)
{
zend_string *str;
zend_ulong hval;
try_again:
if (EXPECTED(Z_TYPE_P(key) == IS_STRING)) {
str = Z_STR_P(key);
if (ZEND_HANDLE_NUMERIC(str, hval)) {
goto num_key;
}
str_key:
return zend_hash_exists(ht, str);
} else if (EXPECTED(Z_TYPE_P(key) == IS_LONG)) {
hval = Z_LVAL_P(key);
num_key:
return zend_hash_index_exists(ht, hval);
} else if (EXPECTED(Z_ISREF_P(key))) {
key = Z_REFVAL_P(key);
goto try_again;
} else if (Z_TYPE_P(key) == IS_DOUBLE) {
hval = zend_dval_to_lval_safe(Z_DVAL_P(key));
goto num_key;
} else if (Z_TYPE_P(key) == IS_FALSE) {
hval = 0;
goto num_key;
} else if (Z_TYPE_P(key) == IS_TRUE) {
hval = 1;
goto num_key;
} else if (Z_TYPE_P(key) == IS_RESOURCE) {
zend_use_resource_as_offset(key);
hval = Z_RES_HANDLE_P(key);
goto num_key;
} else if (Z_TYPE_P(key) <= IS_NULL) {
if (UNEXPECTED(Z_TYPE_P(key) == IS_UNDEF)) {
ZVAL_UNDEFINED_OP1();
}
str = ZSTR_EMPTY_ALLOC();
goto str_key;
} else {
zend_illegal_offset();
return 0;
}
}
static ZEND_COLD void ZEND_FASTCALL zend_array_key_exists_error(
zval *subject, zval *key OPLINE_DC EXECUTE_DATA_DC)
{
if (Z_TYPE_P(key) == IS_UNDEF) {
ZVAL_UNDEFINED_OP1();
}
if (Z_TYPE_P(subject) == IS_UNDEF) {
ZVAL_UNDEFINED_OP2();
}
if (!EG(exception)) {
zend_type_error("array_key_exists(): Argument #2 ($array) must be of type array, %s given",
zend_zval_type_name(subject));
}
}
static zend_always_inline bool promotes_to_array(zval *val) {
return Z_TYPE_P(val) <= IS_FALSE
|| (Z_ISREF_P(val) && Z_TYPE_P(Z_REFVAL_P(val)) <= IS_FALSE);
}
static zend_always_inline bool check_type_array_assignable(zend_type type) {
if (!ZEND_TYPE_IS_SET(type)) {
return 1;
}
return (ZEND_TYPE_FULL_MASK(type) & (MAY_BE_ITERABLE|MAY_BE_ARRAY)) != 0;
}
/* Checks whether an array can be assigned to the reference. Throws error if not assignable. */
ZEND_API bool zend_verify_ref_array_assignable(zend_reference *ref) {
zend_property_info *prop;
ZEND_ASSERT(ZEND_REF_HAS_TYPE_SOURCES(ref));
ZEND_REF_FOREACH_TYPE_SOURCES(ref, prop) {
if (!check_type_array_assignable(prop->type)) {
zend_throw_auto_init_in_ref_error(prop, "array");
return 0;
}
} ZEND_REF_FOREACH_TYPE_SOURCES_END();
return 1;
}
static zend_property_info *zend_object_fetch_property_type_info(
zend_object *obj, zval *slot)
{
if (EXPECTED(!ZEND_CLASS_HAS_TYPE_HINTS(obj->ce))) {
return NULL;
}
/* Not a declared property */
if (UNEXPECTED(slot < obj->properties_table ||
slot >= obj->properties_table + obj->ce->default_properties_count)) {
return NULL;
}
return zend_get_typed_property_info_for_slot(obj, slot);
}
static zend_never_inline bool zend_handle_fetch_obj_flags(
zval *result, zval *ptr, zend_object *obj, zend_property_info *prop_info, uint32_t flags)
{
switch (flags) {
case ZEND_FETCH_DIM_WRITE:
if (promotes_to_array(ptr)) {
if (!prop_info) {
prop_info = zend_object_fetch_property_type_info(obj, ptr);
if (!prop_info) {
break;
}
}
if (!check_type_array_assignable(prop_info->type)) {
zend_throw_auto_init_in_prop_error(prop_info, "array");
if (result) ZVAL_ERROR(result);
return 0;
}
}
break;
case ZEND_FETCH_REF:
if (Z_TYPE_P(ptr) != IS_REFERENCE) {
if (!prop_info) {
prop_info = zend_object_fetch_property_type_info(obj, ptr);
if (!prop_info) {
break;
}
}
if (Z_TYPE_P(ptr) == IS_UNDEF) {
if (!ZEND_TYPE_ALLOW_NULL(prop_info->type)) {
zend_throw_access_uninit_prop_by_ref_error(prop_info);
if (result) ZVAL_ERROR(result);
return 0;
}
ZVAL_NULL(ptr);
}
ZVAL_NEW_REF(ptr, ptr);
ZEND_REF_ADD_TYPE_SOURCE(Z_REF_P(ptr), prop_info);
}
break;
EMPTY_SWITCH_DEFAULT_CASE()
}
return 1;
}
static zend_always_inline void zend_fetch_property_address(zval *result, zval *container, uint32_t container_op_type, zval *prop_ptr, uint32_t prop_op_type, void **cache_slot, int type, uint32_t flags, bool init_undef OPLINE_DC EXECUTE_DATA_DC)
{
zval *ptr;
zend_object *zobj;
zend_string *name, *tmp_name;
if (container_op_type != IS_UNUSED && UNEXPECTED(Z_TYPE_P(container) != IS_OBJECT)) {
do {
if (Z_ISREF_P(container) && Z_TYPE_P(Z_REFVAL_P(container)) == IS_OBJECT) {
container = Z_REFVAL_P(container);
break;
}
if (container_op_type == IS_CV
&& type != BP_VAR_W
&& UNEXPECTED(Z_TYPE_P(container) == IS_UNDEF)) {
ZVAL_UNDEFINED_OP1();
}
/* this should modify object only if it's empty */
if (type == BP_VAR_UNSET) {
ZVAL_NULL(result);
return;
}
zend_throw_non_object_error(container, prop_ptr OPLINE_CC EXECUTE_DATA_CC);
ZVAL_ERROR(result);
return;
} while (0);
}
zobj = Z_OBJ_P(container);
if (prop_op_type == IS_CONST &&
EXPECTED(zobj->ce == CACHED_PTR_EX(cache_slot))) {
uintptr_t prop_offset = (uintptr_t)CACHED_PTR_EX(cache_slot + 1);
if (EXPECTED(IS_VALID_PROPERTY_OFFSET(prop_offset))) {
ptr = OBJ_PROP(zobj, prop_offset);
if (EXPECTED(Z_TYPE_P(ptr) != IS_UNDEF)) {
ZVAL_INDIRECT(result, ptr);
zend_property_info *prop_info = CACHED_PTR_EX(cache_slot + 2);
if (prop_info) {
if (UNEXPECTED(prop_info->flags & ZEND_ACC_READONLY)) {
/* For objects, W/RW/UNSET fetch modes might not actually modify object.
* Similar as with magic __get() allow them, but return the value as a copy
* to make sure no actual modification is possible. */
ZEND_ASSERT(type == BP_VAR_W || type == BP_VAR_RW || type == BP_VAR_UNSET);
if (Z_TYPE_P(ptr) == IS_OBJECT) {
ZVAL_COPY(result, ptr);
} else {
zend_readonly_property_modification_error(prop_info);
ZVAL_ERROR(result);
}
return;
}
if (flags) {
zend_handle_fetch_obj_flags(result, ptr, NULL, prop_info, flags);
}
}
return;
}
} else if (EXPECTED(zobj->properties != NULL)) {
if (UNEXPECTED(GC_REFCOUNT(zobj->properties) > 1)) {
if (EXPECTED(!(GC_FLAGS(zobj->properties) & IS_ARRAY_IMMUTABLE))) {
GC_DELREF(zobj->properties);
}
zobj->properties = zend_array_dup(zobj->properties);
}
ptr = zend_hash_find_known_hash(zobj->properties, Z_STR_P(prop_ptr));
if (EXPECTED(ptr)) {
ZVAL_INDIRECT(result, ptr);
return;
}
}
}
if (prop_op_type == IS_CONST) {
name = Z_STR_P(prop_ptr);
} else {
name = zval_get_tmp_string(prop_ptr, &tmp_name);
}
ptr = zobj->handlers->get_property_ptr_ptr(zobj, name, type, cache_slot);
if (NULL == ptr) {
ptr = zobj->handlers->read_property(zobj, name, type, cache_slot, result);
if (ptr == result) {
if (UNEXPECTED(Z_ISREF_P(ptr) && Z_REFCOUNT_P(ptr) == 1)) {
ZVAL_UNREF(ptr);
}
goto end;
}
if (UNEXPECTED(EG(exception))) {
ZVAL_ERROR(result);
goto end;
}
} else if (UNEXPECTED(Z_ISERROR_P(ptr))) {
ZVAL_ERROR(result);
goto end;
}
ZVAL_INDIRECT(result, ptr);
if (flags) {
zend_property_info *prop_info;
if (prop_op_type == IS_CONST) {
prop_info = CACHED_PTR_EX(cache_slot + 2);
if (prop_info) {
if (UNEXPECTED(!zend_handle_fetch_obj_flags(result, ptr, NULL, prop_info, flags))) {
goto end;
}
}
} else {
if (UNEXPECTED(!zend_handle_fetch_obj_flags(result, ptr, Z_OBJ_P(container), NULL, flags))) {
goto end;
}
}
}
if (init_undef && UNEXPECTED(Z_TYPE_P(ptr) == IS_UNDEF)) {
ZVAL_NULL(ptr);
}
end:
if (prop_op_type != IS_CONST) {
zend_tmp_string_release(tmp_name);
}
}
static zend_always_inline void zend_assign_to_property_reference(zval *container, uint32_t container_op_type, zval *prop_ptr, uint32_t prop_op_type, zval *value_ptr OPLINE_DC EXECUTE_DATA_DC)
{
zval variable, *variable_ptr = &variable;
void **cache_addr = (prop_op_type == IS_CONST) ? CACHE_ADDR(opline->extended_value & ~ZEND_RETURNS_FUNCTION) : NULL;
zend_fetch_property_address(variable_ptr, container, container_op_type, prop_ptr, prop_op_type,
cache_addr, BP_VAR_W, 0, 0 OPLINE_CC EXECUTE_DATA_CC);
if (EXPECTED(Z_TYPE_P(variable_ptr) == IS_INDIRECT)) {
variable_ptr = Z_INDIRECT_P(variable_ptr);
if (/*OP_DATA_TYPE == IS_VAR &&*/
(opline->extended_value & ZEND_RETURNS_FUNCTION) &&
UNEXPECTED(!Z_ISREF_P(value_ptr))) {
variable_ptr = zend_wrong_assign_to_variable_reference(
variable_ptr, value_ptr OPLINE_CC EXECUTE_DATA_CC);
} else {
zend_property_info *prop_info = NULL;
if (prop_op_type == IS_CONST) {
prop_info = (zend_property_info *) CACHED_PTR_EX(cache_addr + 2);
} else {
ZVAL_DEREF(container);
prop_info = zend_object_fetch_property_type_info(Z_OBJ_P(container), variable_ptr);
}
if (UNEXPECTED(prop_info)) {
variable_ptr = zend_assign_to_typed_property_reference(prop_info, variable_ptr, value_ptr EXECUTE_DATA_CC);
} else {
zend_assign_to_variable_reference(variable_ptr, value_ptr);
}
}
} else if (Z_ISERROR_P(variable_ptr)) {
variable_ptr = &EG(uninitialized_zval);
} else {
zend_throw_error(NULL, "Cannot assign by reference to overloaded object");
zval_ptr_dtor(&variable);
variable_ptr = &EG(uninitialized_zval);
}
if (UNEXPECTED(RETURN_VALUE_USED(opline))) {
ZVAL_COPY(EX_VAR(opline->result.var), variable_ptr);
}
}
static zend_never_inline void zend_assign_to_property_reference_this_const(zval *container, zval *prop_ptr, zval *value_ptr OPLINE_DC EXECUTE_DATA_DC)
{
zend_assign_to_property_reference(container, IS_UNUSED, prop_ptr, IS_CONST, value_ptr
OPLINE_CC EXECUTE_DATA_CC);
}
static zend_never_inline void zend_assign_to_property_reference_var_const(zval *container, zval *prop_ptr, zval *value_ptr OPLINE_DC EXECUTE_DATA_DC)
{
zend_assign_to_property_reference(container, IS_VAR, prop_ptr, IS_CONST, value_ptr
OPLINE_CC EXECUTE_DATA_CC);
}
static zend_never_inline void zend_assign_to_property_reference_this_var(zval *container, zval *prop_ptr, zval *value_ptr OPLINE_DC EXECUTE_DATA_DC)
{
zend_assign_to_property_reference(container, IS_UNUSED, prop_ptr, IS_VAR, value_ptr
OPLINE_CC EXECUTE_DATA_CC);
}
static zend_never_inline void zend_assign_to_property_reference_var_var(zval *container, zval *prop_ptr, zval *value_ptr OPLINE_DC EXECUTE_DATA_DC)
{
zend_assign_to_property_reference(container, IS_VAR, prop_ptr, IS_VAR, value_ptr
OPLINE_CC EXECUTE_DATA_CC);
}
static zend_never_inline zend_result zend_fetch_static_property_address_ex(zval **retval, zend_property_info **prop_info, uint32_t cache_slot, int fetch_type OPLINE_DC EXECUTE_DATA_DC) {
zend_string *name;
zend_class_entry *ce;
zend_property_info *property_info;
zend_uchar op1_type = opline->op1_type, op2_type = opline->op2_type;
if (EXPECTED(op2_type == IS_CONST)) {
zval *class_name = RT_CONSTANT(opline, opline->op2);
ZEND_ASSERT(op1_type != IS_CONST || CACHED_PTR(cache_slot) == NULL);
if (EXPECTED((ce = CACHED_PTR(cache_slot)) == NULL)) {
ce = zend_fetch_class_by_name(Z_STR_P(class_name), Z_STR_P(class_name + 1), ZEND_FETCH_CLASS_DEFAULT | ZEND_FETCH_CLASS_EXCEPTION);
if (UNEXPECTED(ce == NULL)) {
FREE_OP(op1_type, opline->op1.var);
return FAILURE;
}
if (UNEXPECTED(op1_type != IS_CONST)) {
CACHE_PTR(cache_slot, ce);
}
}
} else {
if (EXPECTED(op2_type == IS_UNUSED)) {
ce = zend_fetch_class(NULL, opline->op2.num);
if (UNEXPECTED(ce == NULL)) {
FREE_OP(op1_type, opline->op1.var);
return FAILURE;
}
} else {
ce = Z_CE_P(EX_VAR(opline->op2.var));
}
if (EXPECTED(op1_type == IS_CONST) && EXPECTED(CACHED_PTR(cache_slot) == ce)) {
*retval = CACHED_PTR(cache_slot + sizeof(void *));
*prop_info = CACHED_PTR(cache_slot + sizeof(void *) * 2);
return SUCCESS;
}
}
if (EXPECTED(op1_type == IS_CONST)) {
name = Z_STR_P(RT_CONSTANT(opline, opline->op1));
*retval = zend_std_get_static_property_with_info(ce, name, fetch_type, &property_info);
} else {
zend_string *tmp_name;
zval *varname = get_zval_ptr_undef(opline->op1_type, opline->op1, BP_VAR_R);
if (EXPECTED(Z_TYPE_P(varname) == IS_STRING)) {
name = Z_STR_P(varname);
tmp_name = NULL;
} else {
if (op1_type == IS_CV && UNEXPECTED(Z_TYPE_P(varname) == IS_UNDEF)) {
zval_undefined_cv(opline->op1.var EXECUTE_DATA_CC);
}
name = zval_get_tmp_string(varname, &tmp_name);
}
*retval = zend_std_get_static_property_with_info(ce, name, fetch_type, &property_info);
if (UNEXPECTED(op1_type != IS_CONST)) {
zend_tmp_string_release(tmp_name);
FREE_OP(op1_type, opline->op1.var);
}
}
if (UNEXPECTED(*retval == NULL)) {
return FAILURE;
}
*prop_info = property_info;
if (EXPECTED(op1_type == IS_CONST)
&& EXPECTED(!(property_info->ce->ce_flags & ZEND_ACC_TRAIT))) {
CACHE_POLYMORPHIC_PTR(cache_slot, ce, *retval);
CACHE_PTR(cache_slot + sizeof(void *) * 2, property_info);
}
return SUCCESS;
}
static zend_always_inline zend_result zend_fetch_static_property_address(zval **retval, zend_property_info **prop_info, uint32_t cache_slot, int fetch_type, int flags OPLINE_DC EXECUTE_DATA_DC) {
zend_property_info *property_info;
if (opline->op1_type == IS_CONST && (opline->op2_type == IS_CONST || (opline->op2_type == IS_UNUSED && (opline->op2.num == ZEND_FETCH_CLASS_SELF || opline->op2.num == ZEND_FETCH_CLASS_PARENT))) && EXPECTED(CACHED_PTR(cache_slot) != NULL)) {
*retval = CACHED_PTR(cache_slot + sizeof(void *));
property_info = CACHED_PTR(cache_slot + sizeof(void *) * 2);
if ((fetch_type == BP_VAR_R || fetch_type == BP_VAR_RW)
&& UNEXPECTED(Z_TYPE_P(*retval) == IS_UNDEF)
&& UNEXPECTED(ZEND_TYPE_IS_SET(property_info->type))) {
zend_throw_error(NULL, "Typed static property %s::$%s must not be accessed before initialization",
ZSTR_VAL(property_info->ce->name),
zend_get_unmangled_property_name(property_info->name));
return FAILURE;
}
} else {
zend_result success;
success = zend_fetch_static_property_address_ex(retval, &property_info, cache_slot, fetch_type OPLINE_CC EXECUTE_DATA_CC);
if (UNEXPECTED(success != SUCCESS)) {
return FAILURE;
}
}
if (flags && ZEND_TYPE_IS_SET(property_info->type)) {
zend_handle_fetch_obj_flags(NULL, *retval, NULL, property_info, flags);
}
if (prop_info) {
*prop_info = property_info;
}
return SUCCESS;
}
ZEND_API ZEND_COLD void zend_throw_ref_type_error_type(zend_property_info *prop1, zend_property_info *prop2, zval *zv) {
zend_string *type1_str = zend_type_to_string(prop1->type);
zend_string *type2_str = zend_type_to_string(prop2->type);
zend_type_error("Reference with value of type %s held by property %s::$%s of type %s is not compatible with property %s::$%s of type %s",
zend_zval_type_name(zv),
ZSTR_VAL(prop1->ce->name),
zend_get_unmangled_property_name(prop1->name),
ZSTR_VAL(type1_str),
ZSTR_VAL(prop2->ce->name),
zend_get_unmangled_property_name(prop2->name),
ZSTR_VAL(type2_str)
);
zend_string_release(type1_str);
zend_string_release(type2_str);
}
ZEND_API ZEND_COLD void zend_throw_ref_type_error_zval(zend_property_info *prop, zval *zv) {
zend_string *type_str = zend_type_to_string(prop->type);
zend_type_error("Cannot assign %s to reference held by property %s::$%s of type %s",
zend_zval_type_name(zv),
ZSTR_VAL(prop->ce->name),
zend_get_unmangled_property_name(prop->name),
ZSTR_VAL(type_str)
);
zend_string_release(type_str);
}
ZEND_API ZEND_COLD void zend_throw_conflicting_coercion_error(zend_property_info *prop1, zend_property_info *prop2, zval *zv) {
zend_string *type1_str = zend_type_to_string(prop1->type);
zend_string *type2_str = zend_type_to_string(prop2->type);
zend_type_error("Cannot assign %s to reference held by property %s::$%s of type %s and property %s::$%s of type %s, as this would result in an inconsistent type conversion",
zend_zval_type_name(zv),
ZSTR_VAL(prop1->ce->name),
zend_get_unmangled_property_name(prop1->name),
ZSTR_VAL(type1_str),
ZSTR_VAL(prop2->ce->name),
zend_get_unmangled_property_name(prop2->name),
ZSTR_VAL(type2_str)
);
zend_string_release(type1_str);
zend_string_release(type2_str);
}
/* 1: valid, 0: invalid, -1: may be valid after type coercion */
static zend_always_inline int i_zend_verify_type_assignable_zval(
zend_property_info *info, zval *zv, bool strict) {
zend_type type = info->type;
uint32_t type_mask;
zend_uchar zv_type = Z_TYPE_P(zv);
if (EXPECTED(ZEND_TYPE_CONTAINS_CODE(type, zv_type))) {
return 1;
}
if (ZEND_TYPE_IS_COMPLEX(type) && zv_type == IS_OBJECT
&& zend_check_and_resolve_property_class_type(info, Z_OBJCE_P(zv))) {
return 1;
}
type_mask = ZEND_TYPE_FULL_MASK(type);
ZEND_ASSERT(!(type_mask & (MAY_BE_CALLABLE|MAY_BE_STATIC)));
if (type_mask & MAY_BE_ITERABLE) {
return zend_is_iterable(zv);
}
/* SSTH Exception: IS_LONG may be accepted as IS_DOUBLE (converted) */
if (strict) {
if ((type_mask & MAY_BE_DOUBLE) && zv_type == IS_LONG) {
return -1;
}
return 0;
}
/* NULL may be accepted only by nullable hints (this is already checked) */
if (zv_type == IS_NULL) {
return 0;
}
/* Does not contain any type to which a coercion is possible */
if (!(type_mask & (MAY_BE_LONG|MAY_BE_DOUBLE|MAY_BE_STRING))
&& (type_mask & MAY_BE_BOOL) != MAY_BE_BOOL) {
return 0;
}
/* Coercion may be necessary, check separately */
return -1;
}
ZEND_API bool ZEND_FASTCALL zend_verify_ref_assignable_zval(zend_reference *ref, zval *zv, bool strict)
{
zend_property_info *prop;
/* The value must satisfy each property type, and coerce to the same value for each property
* type. Remember the first coerced type and value we've seen for this purpose. */
zend_property_info *first_prop = NULL;
zval coerced_value;
ZVAL_UNDEF(&coerced_value);
ZEND_ASSERT(Z_TYPE_P(zv) != IS_REFERENCE);
ZEND_REF_FOREACH_TYPE_SOURCES(ref, prop) {
int result = i_zend_verify_type_assignable_zval(prop, zv, strict);
if (result == 0) {
type_error:
zend_throw_ref_type_error_zval(prop, zv);
zval_ptr_dtor(&coerced_value);
return 0;
}
if (result < 0) {
if (!first_prop) {
first_prop = prop;
ZVAL_COPY(&coerced_value, zv);
if (!zend_verify_weak_scalar_type_hint(
ZEND_TYPE_FULL_MASK(prop->type), &coerced_value)) {
goto type_error;
}
} else if (Z_ISUNDEF(coerced_value)) {
/* A previous property did not require coercion, but this one does,
* so they are incompatible. */
goto conflicting_coercion_error;
} else {
zval tmp;
ZVAL_COPY(&tmp, zv);
if (!zend_verify_weak_scalar_type_hint(ZEND_TYPE_FULL_MASK(prop->type), &tmp)) {
zval_ptr_dtor(&tmp);
goto type_error;
}
if (!zend_is_identical(&coerced_value, &tmp)) {
zval_ptr_dtor(&tmp);
goto conflicting_coercion_error;
}
zval_ptr_dtor(&tmp);
}
} else {
if (!first_prop) {
first_prop = prop;
} else if (!Z_ISUNDEF(coerced_value)) {
/* A previous property required coercion, but this one doesn't,
* so they are incompatible. */
conflicting_coercion_error:
zend_throw_conflicting_coercion_error(first_prop, prop, zv);
zval_ptr_dtor(&coerced_value);
return 0;
}
}
} ZEND_REF_FOREACH_TYPE_SOURCES_END();
if (!Z_ISUNDEF(coerced_value)) {
zval_ptr_dtor(zv);
ZVAL_COPY_VALUE(zv, &coerced_value);
}
return 1;
}
static zend_always_inline void i_zval_ptr_dtor_noref(zval *zval_ptr) {
if (Z_REFCOUNTED_P(zval_ptr)) {
zend_refcounted *ref = Z_COUNTED_P(zval_ptr);
ZEND_ASSERT(Z_TYPE_P(zval_ptr) != IS_REFERENCE);
if (!GC_DELREF(ref)) {
rc_dtor_func(ref);
} else if (UNEXPECTED(GC_MAY_LEAK(ref))) {
gc_possible_root(ref);
}
}
}
ZEND_API zval* zend_assign_to_typed_ref(zval *variable_ptr, zval *orig_value, zend_uchar value_type, bool strict)
{
bool ret;
zval value;
zend_refcounted *ref = NULL;
if (Z_ISREF_P(orig_value)) {
ref = Z_COUNTED_P(orig_value);
orig_value = Z_REFVAL_P(orig_value);
}
ZVAL_COPY(&value, orig_value);
ret = zend_verify_ref_assignable_zval(Z_REF_P(variable_ptr), &value, strict);
variable_ptr = Z_REFVAL_P(variable_ptr);
if (EXPECTED(ret)) {
i_zval_ptr_dtor_noref(variable_ptr);
ZVAL_COPY_VALUE(variable_ptr, &value);
} else {
zval_ptr_dtor_nogc(&value);
}
if (value_type & (IS_VAR|IS_TMP_VAR)) {
if (UNEXPECTED(ref)) {
if (UNEXPECTED(GC_DELREF(ref) == 0)) {
zval_ptr_dtor(orig_value);
efree_size(ref, sizeof(zend_reference));
}
} else {
i_zval_ptr_dtor_noref(orig_value);
}
}
return variable_ptr;
}
ZEND_API bool ZEND_FASTCALL zend_verify_prop_assignable_by_ref(zend_property_info *prop_info, zval *orig_val, bool strict) {
zval *val = orig_val;
if (Z_ISREF_P(val) && ZEND_REF_HAS_TYPE_SOURCES(Z_REF_P(val))) {
int result;
val = Z_REFVAL_P(val);
result = i_zend_verify_type_assignable_zval(prop_info, val, strict);
if (result > 0) {
return 1;
}
if (result < 0) {
/* This is definitely an error, but we still need to determined why: Either because
* the value is simply illegal for the type, or because or a conflicting coercion. */
zval tmp;
ZVAL_COPY(&tmp, val);
if (zend_verify_weak_scalar_type_hint(ZEND_TYPE_FULL_MASK(prop_info->type), &tmp)) {
zend_property_info *ref_prop = ZEND_REF_FIRST_SOURCE(Z_REF_P(orig_val));
zend_throw_ref_type_error_type(ref_prop, prop_info, val);
zval_ptr_dtor(&tmp);
return 0;
}
zval_ptr_dtor(&tmp);
}
} else {
ZVAL_DEREF(val);
if (i_zend_check_property_type(prop_info, val, strict)) {
return 1;
}
}
zend_verify_property_type_error(prop_info, val);
return 0;
}
ZEND_API void ZEND_FASTCALL zend_ref_add_type_source(zend_property_info_source_list *source_list, zend_property_info *prop)
{
zend_property_info_list *list;
if (source_list->ptr == NULL) {
source_list->ptr = prop;
return;
}
list = ZEND_PROPERTY_INFO_SOURCE_TO_LIST(source_list->list);
if (!ZEND_PROPERTY_INFO_SOURCE_IS_LIST(source_list->list)) {
list = emalloc(sizeof(zend_property_info_list) + (4 - 1) * sizeof(zend_property_info *));
list->ptr[0] = source_list->ptr;
list->num_allocated = 4;
list->num = 1;
} else if (list->num_allocated == list->num) {
list->num_allocated = list->num * 2;
list = erealloc(list, sizeof(zend_property_info_list) + (list->num_allocated - 1) * sizeof(zend_property_info *));
}
list->ptr[list->num++] = prop;
source_list->list = ZEND_PROPERTY_INFO_SOURCE_FROM_LIST(list);
}
ZEND_API void ZEND_FASTCALL zend_ref_del_type_source(zend_property_info_source_list *source_list, zend_property_info *prop)
{
zend_property_info_list *list = ZEND_PROPERTY_INFO_SOURCE_TO_LIST(source_list->list);
zend_property_info **ptr, **end;
ZEND_ASSERT(prop);
if (!ZEND_PROPERTY_INFO_SOURCE_IS_LIST(source_list->list)) {
ZEND_ASSERT(source_list->ptr == prop);
source_list->ptr = NULL;
return;
}
if (list->num == 1) {
ZEND_ASSERT(*list->ptr == prop);
efree(list);
source_list->ptr = NULL;
return;
}
/* Checking against end here to get a more graceful failure mode if we missed adding a type
* source at some point. */
ptr = list->ptr;
end = ptr + list->num;
while (ptr < end && *ptr != prop) {
ptr++;
}
ZEND_ASSERT(*ptr == prop);
/* Copy the last list element into the deleted slot. */
*ptr = list->ptr[--list->num];
if (list->num >= 4 && list->num * 4 == list->num_allocated) {
list->num_allocated = list->num * 2;
source_list->list = ZEND_PROPERTY_INFO_SOURCE_FROM_LIST(erealloc(list, sizeof(zend_property_info_list) + (list->num_allocated - 1) * sizeof(zend_property_info *)));
}
}
static zend_never_inline void zend_fetch_this_var(int type OPLINE_DC EXECUTE_DATA_DC)
{
zval *result = EX_VAR(opline->result.var);
switch (type) {
case BP_VAR_R:
if (EXPECTED(Z_TYPE(EX(This)) == IS_OBJECT)) {
ZVAL_OBJ(result, Z_OBJ(EX(This)));
Z_ADDREF_P(result);
} else {
ZVAL_NULL(result);
zend_error(E_WARNING, "Undefined variable $this");
}
break;
case BP_VAR_IS:
if (EXPECTED(Z_TYPE(EX(This)) == IS_OBJECT)) {
ZVAL_OBJ(result, Z_OBJ(EX(This)));
Z_ADDREF_P(result);
} else {
ZVAL_NULL(result);
}
break;
case BP_VAR_RW:
case BP_VAR_W:
ZVAL_UNDEF(result);
zend_throw_error(NULL, "Cannot re-assign $this");
break;
case BP_VAR_UNSET:
ZVAL_UNDEF(result);
zend_throw_error(NULL, "Cannot unset $this");
break;
EMPTY_SWITCH_DEFAULT_CASE()
}
}
static zend_never_inline ZEND_COLD void ZEND_FASTCALL zend_wrong_clone_call(zend_function *clone, zend_class_entry *scope)
{
zend_throw_error(NULL, "Call to %s %s::__clone() from %s%s",
zend_visibility_string(clone->common.fn_flags), ZSTR_VAL(clone->common.scope->name),
scope ? "scope " : "global scope",
scope ? ZSTR_VAL(scope->name) : ""
);
}
#if ZEND_INTENSIVE_DEBUGGING
#define CHECK_SYMBOL_TABLES() \
zend_hash_apply(&EG(symbol_table), zend_check_symbol); \
if (&EG(symbol_table)!=EX(symbol_table)) { \
zend_hash_apply(EX(symbol_table), zend_check_symbol); \
}
static void zend_check_symbol(zval *pz)
{
if (Z_TYPE_P(pz) == IS_INDIRECT) {
pz = Z_INDIRECT_P(pz);
}
if (Z_TYPE_P(pz) > 10) {
fprintf(stderr, "Warning! %x has invalid type!\n", *pz);
/* See http://support.microsoft.com/kb/190351 */
#ifdef ZEND_WIN32
fflush(stderr);
#endif
} else if (Z_TYPE_P(pz) == IS_ARRAY) {
zend_hash_apply(Z_ARRVAL_P(pz), zend_check_symbol);
} else if (Z_TYPE_P(pz) == IS_OBJECT) {
/* OBJ-TBI - doesn't support new object model! */
zend_hash_apply(Z_OBJPROP_P(pz), zend_check_symbol);
}
}
#else
#define CHECK_SYMBOL_TABLES()
#endif
ZEND_API void execute_internal(zend_execute_data *execute_data, zval *return_value)
{
execute_data->func->internal_function.handler(execute_data, return_value);
}
ZEND_API void zend_clean_and_cache_symbol_table(zend_array *symbol_table) /* {{{ */
{
/* Clean before putting into the cache, since clean could call dtors,
* which could use the cached hash. Also do this before the check for
* available cache slots, as those may be used by a dtor as well. */
zend_symtable_clean(symbol_table);
if (EG(symtable_cache_ptr) >= EG(symtable_cache_limit)) {
zend_array_destroy(symbol_table);
} else {
*(EG(symtable_cache_ptr)++) = symbol_table;
}
}
/* }}} */
static zend_always_inline void i_free_compiled_variables(zend_execute_data *execute_data) /* {{{ */
{
zval *cv = EX_VAR_NUM(0);
int count = EX(func)->op_array.last_var;
while (EXPECTED(count != 0)) {
i_zval_ptr_dtor(cv);
cv++;
count--;
}
}
/* }}} */
ZEND_API void ZEND_FASTCALL zend_free_compiled_variables(zend_execute_data *execute_data) /* {{{ */
{
i_free_compiled_variables(execute_data);
}
/* }}} */
#define ZEND_VM_INTERRUPT_CHECK() do { \
if (UNEXPECTED(EG(vm_interrupt))) { \
ZEND_VM_INTERRUPT(); \
} \
} while (0)
#define ZEND_VM_LOOP_INTERRUPT_CHECK() do { \
if (UNEXPECTED(EG(vm_interrupt))) { \
ZEND_VM_LOOP_INTERRUPT(); \
} \
} while (0)
/*
* Stack Frame Layout (the whole stack frame is allocated at once)
* ==================
*
* +========================================+
* EG(current_execute_data) -> | zend_execute_data |
* +----------------------------------------+
* EX_VAR_NUM(0) --------> | VAR[0] = ARG[1] |
* | ... |
* | VAR[op_array->num_args-1] = ARG[N] |
* | ... |
* | VAR[op_array->last_var-1] |
* | VAR[op_array->last_var] = TMP[0] |
* | ... |
* | VAR[op_array->last_var+op_array->T-1] |
* | ARG[N+1] (extra_args) |
* | ... |
* +----------------------------------------+
*/
/* zend_copy_extra_args is used when the actually passed number of arguments
* (EX_NUM_ARGS) is greater than what the function defined (op_array->num_args).
*
* The extra arguments will be copied into the call frame after all the compiled variables.
*
* If there are extra arguments copied, a flag "ZEND_CALL_FREE_EXTRA_ARGS" will be set
* on the zend_execute_data, and when the executor leaves the function, the
* args will be freed in zend_leave_helper.
*/
static zend_never_inline void zend_copy_extra_args(EXECUTE_DATA_D)
{
zend_op_array *op_array = &EX(func)->op_array;
uint32_t first_extra_arg = op_array->num_args;
uint32_t num_args = EX_NUM_ARGS();
zval *src;
size_t delta;
uint32_t count;
uint32_t type_flags = 0;
if (EXPECTED((op_array->fn_flags & ZEND_ACC_HAS_TYPE_HINTS) == 0)) {
/* Skip useless ZEND_RECV and ZEND_RECV_INIT opcodes */
#if defined(ZEND_VM_IP_GLOBAL_REG) && ((ZEND_VM_KIND == ZEND_VM_KIND_CALL) || (ZEND_VM_KIND == ZEND_VM_KIND_HYBRID))
opline += first_extra_arg;
#else
EX(opline) += first_extra_arg;
#endif
}
/* move extra args into separate array after all CV and TMP vars */
src = EX_VAR_NUM(num_args - 1);
delta = op_array->last_var + op_array->T - first_extra_arg;
count = num_args - first_extra_arg;
if (EXPECTED(delta != 0)) {
delta *= sizeof(zval);
do {
type_flags |= Z_TYPE_INFO_P(src);
ZVAL_COPY_VALUE((zval*)(((char*)src) + delta), src);
ZVAL_UNDEF(src);
src--;
} while (--count);
if (Z_TYPE_INFO_REFCOUNTED(type_flags)) {
ZEND_ADD_CALL_FLAG(execute_data, ZEND_CALL_FREE_EXTRA_ARGS);
}
} else {
do {
if (Z_REFCOUNTED_P(src)) {
ZEND_ADD_CALL_FLAG(execute_data, ZEND_CALL_FREE_EXTRA_ARGS);
break;
}
src--;
} while (--count);
}
}
static zend_always_inline void zend_init_cvs(uint32_t first, uint32_t last EXECUTE_DATA_DC)
{
if (EXPECTED(first < last)) {
uint32_t count = last - first;
zval *var = EX_VAR_NUM(first);
do {
ZVAL_UNDEF(var);
var++;
} while (--count);
}
}
static zend_always_inline void i_init_func_execute_data(zend_op_array *op_array, zval *return_value, bool may_be_trampoline EXECUTE_DATA_DC) /* {{{ */
{
uint32_t first_extra_arg, num_args;
ZEND_ASSERT(EX(func) == (zend_function*)op_array);
#if defined(ZEND_VM_IP_GLOBAL_REG) && ((ZEND_VM_KIND == ZEND_VM_KIND_CALL) || (ZEND_VM_KIND == ZEND_VM_KIND_HYBRID))
opline = op_array->opcodes;
#else
EX(opline) = op_array->opcodes;
#endif
EX(call) = NULL;
EX(return_value) = return_value;
/* Handle arguments */
first_extra_arg = op_array->num_args;
num_args = EX_NUM_ARGS();
if (UNEXPECTED(num_args > first_extra_arg)) {
if (!may_be_trampoline || EXPECTED(!(op_array->fn_flags & ZEND_ACC_CALL_VIA_TRAMPOLINE))) {
zend_copy_extra_args(EXECUTE_DATA_C);
}
} else if (EXPECTED((op_array->fn_flags & ZEND_ACC_HAS_TYPE_HINTS) == 0)) {
/* Skip useless ZEND_RECV and ZEND_RECV_INIT opcodes */
#if defined(ZEND_VM_IP_GLOBAL_REG) && ((ZEND_VM_KIND == ZEND_VM_KIND_CALL) || (ZEND_VM_KIND == ZEND_VM_KIND_HYBRID))
opline += num_args;
#else
EX(opline) += num_args;
#endif
}
/* Initialize CV variables (skip arguments) */
zend_init_cvs(num_args, op_array->last_var EXECUTE_DATA_CC);
EX(run_time_cache) = RUN_TIME_CACHE(op_array);
EG(current_execute_data) = execute_data;
}
/* }}} */
static zend_always_inline void init_func_run_time_cache_i(zend_op_array *op_array) /* {{{ */
{
void **run_time_cache;
ZEND_ASSERT(RUN_TIME_CACHE(op_array) == NULL);
run_time_cache = zend_arena_alloc(&CG(arena), op_array->cache_size);
memset(run_time_cache, 0, op_array->cache_size);
ZEND_MAP_PTR_SET(op_array->run_time_cache, run_time_cache);
}
/* }}} */
static zend_never_inline void ZEND_FASTCALL init_func_run_time_cache(zend_op_array *op_array) /* {{{ */
{
init_func_run_time_cache_i(op_array);
}
/* }}} */
ZEND_API zend_function * ZEND_FASTCALL zend_fetch_function(zend_string *name) /* {{{ */
{
zval *zv = zend_hash_find(EG(function_table), name);
if (EXPECTED(zv != NULL)) {
zend_function *fbc = Z_FUNC_P(zv);
if (EXPECTED(fbc->type == ZEND_USER_FUNCTION) && UNEXPECTED(!RUN_TIME_CACHE(&fbc->op_array))) {
init_func_run_time_cache_i(&fbc->op_array);
}
return fbc;
}
return NULL;
} /* }}} */
ZEND_API zend_function * ZEND_FASTCALL zend_fetch_function_str(const char *name, size_t len) /* {{{ */
{
zval *zv = zend_hash_str_find(EG(function_table), name, len);
if (EXPECTED(zv != NULL)) {
zend_function *fbc = Z_FUNC_P(zv);
if (EXPECTED(fbc->type == ZEND_USER_FUNCTION) && UNEXPECTED(!RUN_TIME_CACHE(&fbc->op_array))) {
init_func_run_time_cache_i(&fbc->op_array);
}
return fbc;
}
return NULL;
} /* }}} */
ZEND_API void ZEND_FASTCALL zend_init_func_run_time_cache(zend_op_array *op_array) /* {{{ */
{
if (!RUN_TIME_CACHE(op_array)) {
init_func_run_time_cache_i(op_array);
}
} /* }}} */
static zend_always_inline void i_init_code_execute_data(zend_execute_data *execute_data, zend_op_array *op_array, zval *return_value) /* {{{ */
{
ZEND_ASSERT(EX(func) == (zend_function*)op_array);
EX(opline) = op_array->opcodes;
EX(call) = NULL;
EX(return_value) = return_value;
zend_attach_symbol_table(execute_data);
if (!ZEND_MAP_PTR(op_array->run_time_cache)) {
void *ptr;
ZEND_ASSERT(op_array->fn_flags & ZEND_ACC_HEAP_RT_CACHE);
ptr = emalloc(op_array->cache_size + sizeof(void*));
ZEND_MAP_PTR_INIT(op_array->run_time_cache, ptr);
ptr = (char*)ptr + sizeof(void*);
ZEND_MAP_PTR_SET(op_array->run_time_cache, ptr);
memset(ptr, 0, op_array->cache_size);
}
EX(run_time_cache) = RUN_TIME_CACHE(op_array);
EG(current_execute_data) = execute_data;
}
/* }}} */
ZEND_API void zend_init_func_execute_data(zend_execute_data *ex, zend_op_array *op_array, zval *return_value) /* {{{ */
{
#if defined(ZEND_VM_FP_GLOBAL_REG) && ((ZEND_VM_KIND == ZEND_VM_KIND_CALL) || (ZEND_VM_KIND == ZEND_VM_KIND_HYBRID))
zend_execute_data *orig_execute_data = execute_data;
#endif
#if defined(ZEND_VM_IP_GLOBAL_REG) && ((ZEND_VM_KIND == ZEND_VM_KIND_CALL) || (ZEND_VM_KIND == ZEND_VM_KIND_HYBRID))
const zend_op *orig_opline = opline;
#endif
#if defined(ZEND_VM_FP_GLOBAL_REG) && ((ZEND_VM_KIND == ZEND_VM_KIND_CALL) || (ZEND_VM_KIND == ZEND_VM_KIND_HYBRID))
execute_data = ex;
#else
zend_execute_data *execute_data = ex;
#endif
EX(prev_execute_data) = EG(current_execute_data);
if (!RUN_TIME_CACHE(op_array)) {
init_func_run_time_cache(op_array);
}
i_init_func_execute_data(op_array, return_value, 1 EXECUTE_DATA_CC);
#if defined(ZEND_VM_IP_GLOBAL_REG) && ((ZEND_VM_KIND == ZEND_VM_KIND_CALL) || (ZEND_VM_KIND == ZEND_VM_KIND_HYBRID))
EX(opline) = opline;
opline = orig_opline;
#endif
#if defined(ZEND_VM_FP_GLOBAL_REG) && ((ZEND_VM_KIND == ZEND_VM_KIND_CALL) || (ZEND_VM_KIND == ZEND_VM_KIND_HYBRID))
execute_data = orig_execute_data;
#endif
}
/* }}} */
ZEND_API void zend_init_code_execute_data(zend_execute_data *execute_data, zend_op_array *op_array, zval *return_value) /* {{{ */
{
EX(prev_execute_data) = EG(current_execute_data);
i_init_code_execute_data(execute_data, op_array, return_value);
}
/* }}} */
ZEND_API void zend_init_execute_data(zend_execute_data *execute_data, zend_op_array *op_array, zval *return_value) /* {{{ */
{
if (EX_CALL_INFO() & ZEND_CALL_HAS_SYMBOL_TABLE) {
zend_init_code_execute_data(execute_data, op_array, return_value);
} else {
zend_init_func_execute_data(execute_data, op_array, return_value);
}
}
/* }}} */
zend_execute_data *zend_vm_stack_copy_call_frame(zend_execute_data *call, uint32_t passed_args, uint32_t additional_args) /* {{{ */
{
zend_execute_data *new_call;
int used_stack = (EG(vm_stack_top) - (zval*)call) + additional_args;
/* copy call frame into new stack segment */
new_call = zend_vm_stack_extend(used_stack * sizeof(zval));
*new_call = *call;
ZEND_ADD_CALL_FLAG(new_call, ZEND_CALL_ALLOCATED);
if (passed_args) {
zval *src = ZEND_CALL_ARG(call, 1);
zval *dst = ZEND_CALL_ARG(new_call, 1);
do {
ZVAL_COPY_VALUE(dst, src);
passed_args--;
src++;
dst++;
} while (passed_args);
}
/* delete old call_frame from previous stack segment */
EG(vm_stack)->prev->top = (zval*)call;
/* delete previous stack segment if it became empty */
if (UNEXPECTED(EG(vm_stack)->prev->top == ZEND_VM_STACK_ELEMENTS(EG(vm_stack)->prev))) {
zend_vm_stack r = EG(vm_stack)->prev;
EG(vm_stack)->prev = r->prev;
efree(r);
}
return new_call;
}
/* }}} */
static zend_always_inline zend_generator *zend_get_running_generator(EXECUTE_DATA_D) /* {{{ */
{
/* The generator object is stored in EX(return_value) */
zend_generator *generator = (zend_generator *) EX(return_value);
/* However control may currently be delegated to another generator.
* That's the one we're interested in. */
return generator;
}
/* }}} */
static void cleanup_unfinished_calls(zend_execute_data *execute_data, uint32_t op_num) /* {{{ */
{
if (UNEXPECTED(EX(call))) {
zend_execute_data *call = EX(call);
zend_op *opline = EX(func)->op_array.opcodes + op_num;
int level;
int do_exit;
if (UNEXPECTED(opline->opcode == ZEND_INIT_FCALL ||
opline->opcode == ZEND_INIT_FCALL_BY_NAME ||
opline->opcode == ZEND_INIT_NS_FCALL_BY_NAME ||
opline->opcode == ZEND_INIT_DYNAMIC_CALL ||
opline->opcode == ZEND_INIT_USER_CALL ||
opline->opcode == ZEND_INIT_METHOD_CALL ||
opline->opcode == ZEND_INIT_STATIC_METHOD_CALL ||
opline->opcode == ZEND_NEW)) {
ZEND_ASSERT(op_num);
opline--;
}
do {
/* If the exception was thrown during a function call there might be
* arguments pushed to the stack that have to be dtor'ed. */
/* find the number of actually passed arguments */
level = 0;
do_exit = 0;
do {
switch (opline->opcode) {
case ZEND_DO_FCALL:
case ZEND_DO_ICALL:
case ZEND_DO_UCALL:
case ZEND_DO_FCALL_BY_NAME:
level++;
break;
case ZEND_INIT_FCALL:
case ZEND_INIT_FCALL_BY_NAME:
case ZEND_INIT_NS_FCALL_BY_NAME:
case ZEND_INIT_DYNAMIC_CALL:
case ZEND_INIT_USER_CALL:
case ZEND_INIT_METHOD_CALL:
case ZEND_INIT_STATIC_METHOD_CALL:
case ZEND_NEW:
if (level == 0) {
ZEND_CALL_NUM_ARGS(call) = 0;
do_exit = 1;
}
level--;
break;
case ZEND_SEND_VAL:
case ZEND_SEND_VAL_EX:
case ZEND_SEND_VAR:
case ZEND_SEND_VAR_EX:
case ZEND_SEND_FUNC_ARG:
case ZEND_SEND_REF:
case ZEND_SEND_VAR_NO_REF:
case ZEND_SEND_VAR_NO_REF_EX:
case ZEND_SEND_USER:
if (level == 0) {
/* For named args, the number of arguments is up to date. */
if (opline->op2_type != IS_CONST) {
ZEND_CALL_NUM_ARGS(call) = opline->op2.num;
}
do_exit = 1;
}
break;
case ZEND_SEND_ARRAY:
case ZEND_SEND_UNPACK:
case ZEND_CHECK_UNDEF_ARGS:
if (level == 0) {
do_exit = 1;
}
break;
}
if (!do_exit) {
opline--;
}
} while (!do_exit);
if (call->prev_execute_data) {
/* skip current call region */
level = 0;
do_exit = 0;
do {
switch (opline->opcode) {
case ZEND_DO_FCALL:
case ZEND_DO_ICALL:
case ZEND_DO_UCALL:
case ZEND_DO_FCALL_BY_NAME:
level++;
break;
case ZEND_INIT_FCALL:
case ZEND_INIT_FCALL_BY_NAME:
case ZEND_INIT_NS_FCALL_BY_NAME:
case ZEND_INIT_DYNAMIC_CALL:
case ZEND_INIT_USER_CALL:
case ZEND_INIT_METHOD_CALL:
case ZEND_INIT_STATIC_METHOD_CALL:
case ZEND_NEW:
if (level == 0) {
do_exit = 1;
}
level--;
break;
}
opline--;
} while (!do_exit);
}
zend_vm_stack_free_args(EX(call));
if (ZEND_CALL_INFO(call) & ZEND_CALL_RELEASE_THIS) {
OBJ_RELEASE(Z_OBJ(call->This));
}
if (ZEND_CALL_INFO(call) & ZEND_CALL_HAS_EXTRA_NAMED_PARAMS) {
zend_free_extra_named_params(call->extra_named_params);
}
if (call->func->common.fn_flags & ZEND_ACC_CLOSURE) {
zend_object_release(ZEND_CLOSURE_OBJECT(call->func));
} else if (call->func->common.fn_flags & ZEND_ACC_CALL_VIA_TRAMPOLINE) {
zend_string_release_ex(call->func->common.function_name, 0);
zend_free_trampoline(call->func);
}
EX(call) = call->prev_execute_data;
zend_vm_stack_free_call_frame(call);
call = EX(call);
} while (call);
}
}
/* }}} */
static const zend_live_range *find_live_range(const zend_op_array *op_array, uint32_t op_num, uint32_t var_num) /* {{{ */
{
int i;
for (i = 0; i < op_array->last_live_range; i++) {
const zend_live_range *range = &op_array->live_range[i];
if (op_num >= range->start && op_num < range->end
&& var_num == (range->var & ~ZEND_LIVE_MASK)) {
return range;
}
}
return NULL;
}
/* }}} */
static void cleanup_live_vars(zend_execute_data *execute_data, uint32_t op_num, uint32_t catch_op_num) /* {{{ */
{
int i;
for (i = 0; i < EX(func)->op_array.last_live_range; i++) {
const zend_live_range *range = &EX(func)->op_array.live_range[i];
if (range->start > op_num) {
/* further blocks will not be relevant... */
break;
} else if (op_num < range->end) {
if (!catch_op_num || catch_op_num >= range->end) {
uint32_t kind = range->var & ZEND_LIVE_MASK;
uint32_t var_num = range->var & ~ZEND_LIVE_MASK;
zval *var = EX_VAR(var_num);
if (kind == ZEND_LIVE_TMPVAR) {
zval_ptr_dtor_nogc(var);
} else if (kind == ZEND_LIVE_NEW) {
zend_object *obj;
ZEND_ASSERT(Z_TYPE_P(var) == IS_OBJECT);
obj = Z_OBJ_P(var);
zend_object_store_ctor_failed(obj);
OBJ_RELEASE(obj);
} else if (kind == ZEND_LIVE_LOOP) {
if (Z_TYPE_P(var) != IS_ARRAY && Z_FE_ITER_P(var) != (uint32_t)-1) {
zend_hash_iterator_del(Z_FE_ITER_P(var));
}
zval_ptr_dtor_nogc(var);
} else if (kind == ZEND_LIVE_ROPE) {
zend_string **rope = (zend_string **)var;
zend_op *last = EX(func)->op_array.opcodes + op_num;
while ((last->opcode != ZEND_ROPE_ADD && last->opcode != ZEND_ROPE_INIT)
|| last->result.var != var_num) {
ZEND_ASSERT(last >= EX(func)->op_array.opcodes);
last--;
}
if (last->opcode == ZEND_ROPE_INIT) {
zend_string_release_ex(*rope, 0);
} else {
int j = last->extended_value;
do {
zend_string_release_ex(rope[j], 0);
} while (j--);
}
} else if (kind == ZEND_LIVE_SILENCE) {
/* restore previous error_reporting value */
if (E_HAS_ONLY_FATAL_ERRORS(EG(error_reporting))
&& !E_HAS_ONLY_FATAL_ERRORS(Z_LVAL_P(var))) {
EG(error_reporting) = Z_LVAL_P(var);
}
}
}
}
}
}
/* }}} */
ZEND_API void zend_cleanup_unfinished_execution(zend_execute_data *execute_data, uint32_t op_num, uint32_t catch_op_num) {
cleanup_unfinished_calls(execute_data, op_num);
cleanup_live_vars(execute_data, op_num, catch_op_num);
}
#if ZEND_VM_SPEC
static void zend_swap_operands(zend_op *op) /* {{{ */
{
znode_op tmp;
zend_uchar tmp_type;
tmp = op->op1;
tmp_type = op->op1_type;
op->op1 = op->op2;
op->op1_type = op->op2_type;
op->op2 = tmp;
op->op2_type = tmp_type;
}
/* }}} */
#endif
static zend_never_inline zend_execute_data *zend_init_dynamic_call_string(zend_string *function, uint32_t num_args) /* {{{ */
{
zend_function *fbc;
zval *func;
zend_class_entry *called_scope;
zend_string *lcname;
const char *colon;
if ((colon = zend_memrchr(ZSTR_VAL(function), ':', ZSTR_LEN(function))) != NULL &&
colon > ZSTR_VAL(function) &&
*(colon-1) == ':'
) {
zend_string *mname;
size_t cname_length = colon - ZSTR_VAL(function) - 1;
size_t mname_length = ZSTR_LEN(function) - cname_length - (sizeof("::") - 1);
lcname = zend_string_init(ZSTR_VAL(function), cname_length, 0);
called_scope = zend_fetch_class_by_name(lcname, NULL, ZEND_FETCH_CLASS_DEFAULT | ZEND_FETCH_CLASS_EXCEPTION);
if (UNEXPECTED(called_scope == NULL)) {
zend_string_release_ex(lcname, 0);
return NULL;
}
mname = zend_string_init(ZSTR_VAL(function) + (cname_length + sizeof("::") - 1), mname_length, 0);
if (called_scope->get_static_method) {
fbc = called_scope->get_static_method(called_scope, mname);
} else {
fbc = zend_std_get_static_method(called_scope, mname, NULL);
}
if (UNEXPECTED(fbc == NULL)) {
if (EXPECTED(!EG(exception))) {
zend_undefined_method(called_scope, mname);
}
zend_string_release_ex(lcname, 0);
zend_string_release_ex(mname, 0);
return NULL;
}
zend_string_release_ex(lcname, 0);
zend_string_release_ex(mname, 0);
if (UNEXPECTED(!(fbc->common.fn_flags & ZEND_ACC_STATIC))) {
zend_non_static_method_call(fbc);
if (fbc->common.fn_flags & ZEND_ACC_CALL_VIA_TRAMPOLINE) {
zend_string_release_ex(fbc->common.function_name, 0);
zend_free_trampoline(fbc);
}
return NULL;
}
if (EXPECTED(fbc->type == ZEND_USER_FUNCTION) && UNEXPECTED(!RUN_TIME_CACHE(&fbc->op_array))) {
init_func_run_time_cache(&fbc->op_array);
}
} else {
if (ZSTR_VAL(function)[0] == '\\') {
lcname = zend_string_alloc(ZSTR_LEN(function) - 1, 0);
zend_str_tolower_copy(ZSTR_VAL(lcname), ZSTR_VAL(function) + 1, ZSTR_LEN(function) - 1);
} else {
lcname = zend_string_tolower(function);
}
if (UNEXPECTED((func = zend_hash_find(EG(function_table), lcname)) == NULL)) {
zend_throw_error(NULL, "Call to undefined function %s()", ZSTR_VAL(function));
zend_string_release_ex(lcname, 0);
return NULL;
}
zend_string_release_ex(lcname, 0);
fbc = Z_FUNC_P(func);
if (EXPECTED(fbc->type == ZEND_USER_FUNCTION) && UNEXPECTED(!RUN_TIME_CACHE(&fbc->op_array))) {
init_func_run_time_cache(&fbc->op_array);
}
called_scope = NULL;
}
return zend_vm_stack_push_call_frame(ZEND_CALL_NESTED_FUNCTION | ZEND_CALL_DYNAMIC,
fbc, num_args, called_scope);
}
/* }}} */
static zend_never_inline zend_execute_data *zend_init_dynamic_call_object(zend_object *function, uint32_t num_args) /* {{{ */
{
zend_function *fbc;
void *object_or_called_scope;
zend_class_entry *called_scope;
zend_object *object;
uint32_t call_info;
if (EXPECTED(function->handlers->get_closure) &&
EXPECTED(function->handlers->get_closure(function, &called_scope, &fbc, &object, 0) == SUCCESS)) {
object_or_called_scope = called_scope;
if (EXPECTED(fbc->common.fn_flags & ZEND_ACC_CLOSURE)) {
/* Delay closure destruction until its invocation */
GC_ADDREF(ZEND_CLOSURE_OBJECT(fbc));
ZEND_ASSERT(ZEND_ACC_FAKE_CLOSURE == ZEND_CALL_FAKE_CLOSURE);
call_info = ZEND_CALL_NESTED_FUNCTION | ZEND_CALL_DYNAMIC | ZEND_CALL_CLOSURE |
(fbc->common.fn_flags & ZEND_ACC_FAKE_CLOSURE);
if (object) {
call_info |= ZEND_CALL_HAS_THIS;
object_or_called_scope = object;
}
} else {
call_info = ZEND_CALL_NESTED_FUNCTION | ZEND_CALL_DYNAMIC;
if (object) {
call_info |= ZEND_CALL_RELEASE_THIS | ZEND_CALL_HAS_THIS;
GC_ADDREF(object); /* For $this pointer */
object_or_called_scope = object;
}
}
} else {
zend_throw_error(NULL, "Object of type %s is not callable", ZSTR_VAL(function->ce->name));
return NULL;
}
if (EXPECTED(fbc->type == ZEND_USER_FUNCTION) && UNEXPECTED(!RUN_TIME_CACHE(&fbc->op_array))) {
init_func_run_time_cache(&fbc->op_array);
}
return zend_vm_stack_push_call_frame(call_info,
fbc, num_args, object_or_called_scope);
}
/* }}} */
static zend_never_inline zend_execute_data *zend_init_dynamic_call_array(zend_array *function, uint32_t num_args) /* {{{ */
{
zend_function *fbc;
void *object_or_called_scope;
uint32_t call_info = ZEND_CALL_NESTED_FUNCTION | ZEND_CALL_DYNAMIC;
if (zend_hash_num_elements(function) == 2) {
zval *obj;
zval *method;
obj = zend_hash_index_find(function, 0);
method = zend_hash_index_find(function, 1);
if (UNEXPECTED(!obj) || UNEXPECTED(!method)) {
zend_throw_error(NULL, "Array callback has to contain indices 0 and 1");
return NULL;
}
ZVAL_DEREF(obj);
if (UNEXPECTED(Z_TYPE_P(obj) != IS_STRING) && UNEXPECTED(Z_TYPE_P(obj) != IS_OBJECT)) {
zend_throw_error(NULL, "First array member is not a valid class name or object");
return NULL;
}
ZVAL_DEREF(method);
if (UNEXPECTED(Z_TYPE_P(method) != IS_STRING)) {
zend_throw_error(NULL, "Second array member is not a valid method");
return NULL;
}
if (Z_TYPE_P(obj) == IS_STRING) {
zend_class_entry *called_scope = zend_fetch_class_by_name(Z_STR_P(obj), NULL, ZEND_FETCH_CLASS_DEFAULT | ZEND_FETCH_CLASS_EXCEPTION);
if (UNEXPECTED(called_scope == NULL)) {
return NULL;
}
if (called_scope->get_static_method) {
fbc = called_scope->get_static_method(called_scope, Z_STR_P(method));
} else {
fbc = zend_std_get_static_method(called_scope, Z_STR_P(method), NULL);
}
if (UNEXPECTED(fbc == NULL)) {
if (EXPECTED(!EG(exception))) {
zend_undefined_method(called_scope, Z_STR_P(method));
}
return NULL;
}
if (!(fbc->common.fn_flags & ZEND_ACC_STATIC)) {
zend_non_static_method_call(fbc);
if (fbc->common.fn_flags & ZEND_ACC_CALL_VIA_TRAMPOLINE) {
zend_string_release_ex(fbc->common.function_name, 0);
zend_free_trampoline(fbc);
}
return NULL;
}
object_or_called_scope = called_scope;
} else {
zend_object *object = Z_OBJ_P(obj);
fbc = Z_OBJ_HT_P(obj)->get_method(&object, Z_STR_P(method), NULL);
if (UNEXPECTED(fbc == NULL)) {
if (EXPECTED(!EG(exception))) {
zend_undefined_method(object->ce, Z_STR_P(method));
}
return NULL;
}
if ((fbc->common.fn_flags & ZEND_ACC_STATIC) != 0) {
object_or_called_scope = object->ce;
} else {
call_info |= ZEND_CALL_RELEASE_THIS | ZEND_CALL_HAS_THIS;
GC_ADDREF(object); /* For $this pointer */
object_or_called_scope = object;
}
}
} else {
zend_throw_error(NULL, "Array callback must have exactly two elements");
return NULL;
}
if (EXPECTED(fbc->type == ZEND_USER_FUNCTION) && UNEXPECTED(!RUN_TIME_CACHE(&fbc->op_array))) {
init_func_run_time_cache(&fbc->op_array);
}
return zend_vm_stack_push_call_frame(call_info,
fbc, num_args, object_or_called_scope);
}
/* }}} */
#define ZEND_FAKE_OP_ARRAY ((zend_op_array*)(zend_intptr_t)-1)
static zend_never_inline zend_op_array* ZEND_FASTCALL zend_include_or_eval(zval *inc_filename_zv, int type) /* {{{ */
{
zend_op_array *new_op_array = NULL;
zend_string *tmp_inc_filename;
zend_string *inc_filename = zval_try_get_tmp_string(inc_filename_zv, &tmp_inc_filename);
if (UNEXPECTED(!inc_filename)) {
return NULL;
}
switch (type) {
case ZEND_INCLUDE_ONCE:
case ZEND_REQUIRE_ONCE: {
zend_file_handle file_handle;
zend_string *resolved_path;
resolved_path = zend_resolve_path(inc_filename);
if (EXPECTED(resolved_path)) {
if (zend_hash_exists(&EG(included_files), resolved_path)) {
new_op_array = ZEND_FAKE_OP_ARRAY;
zend_string_release_ex(resolved_path, 0);
break;
}
} else if (UNEXPECTED(EG(exception))) {
break;
} else if (UNEXPECTED(strlen(ZSTR_VAL(inc_filename)) != ZSTR_LEN(inc_filename))) {
zend_message_dispatcher(
(type == ZEND_INCLUDE_ONCE) ?
ZMSG_FAILED_INCLUDE_FOPEN : ZMSG_FAILED_REQUIRE_FOPEN,
ZSTR_VAL(inc_filename));
break;
} else {
resolved_path = zend_string_copy(inc_filename);
}
zend_stream_init_filename_ex(&file_handle, resolved_path);
if (SUCCESS == zend_stream_open(&file_handle)) {
if (!file_handle.opened_path) {
file_handle.opened_path = zend_string_copy(resolved_path);
}
if (zend_hash_add_empty_element(&EG(included_files), file_handle.opened_path)) {
zend_op_array *op_array = zend_compile_file(&file_handle, (type==ZEND_INCLUDE_ONCE?ZEND_INCLUDE:ZEND_REQUIRE));
zend_destroy_file_handle(&file_handle);
zend_string_release_ex(resolved_path, 0);
zend_tmp_string_release(tmp_inc_filename);
return op_array;
} else {
new_op_array = ZEND_FAKE_OP_ARRAY;
}
} else if (!EG(exception)) {
zend_message_dispatcher(
(type == ZEND_INCLUDE_ONCE) ?
ZMSG_FAILED_INCLUDE_FOPEN : ZMSG_FAILED_REQUIRE_FOPEN,
ZSTR_VAL(inc_filename));
}
zend_destroy_file_handle(&file_handle);
zend_string_release_ex(resolved_path, 0);
}
break;
case ZEND_INCLUDE:
case ZEND_REQUIRE:
if (UNEXPECTED(strlen(ZSTR_VAL(inc_filename)) != ZSTR_LEN(inc_filename))) {
zend_message_dispatcher(
(type == ZEND_INCLUDE) ?
ZMSG_FAILED_INCLUDE_FOPEN : ZMSG_FAILED_REQUIRE_FOPEN,
ZSTR_VAL(inc_filename));
break;
}
new_op_array = compile_filename(type, inc_filename);
break;
case ZEND_EVAL: {
char *eval_desc = zend_make_compiled_string_description("eval()'d code");
new_op_array = zend_compile_string(inc_filename, eval_desc);
efree(eval_desc);
}
break;
EMPTY_SWITCH_DEFAULT_CASE()
}
zend_tmp_string_release(tmp_inc_filename);
return new_op_array;
}
/* }}} */
static zend_never_inline bool ZEND_FASTCALL zend_fe_reset_iterator(zval *array_ptr, int by_ref OPLINE_DC EXECUTE_DATA_DC) /* {{{ */
{
zend_class_entry *ce = Z_OBJCE_P(array_ptr);
zend_object_iterator *iter = ce->get_iterator(ce, array_ptr, by_ref);
bool is_empty;
if (UNEXPECTED(!iter) || UNEXPECTED(EG(exception))) {
if (iter) {
OBJ_RELEASE(&iter->std);
}
if (!EG(exception)) {
zend_throw_exception_ex(NULL, 0, "Object of type %s did not create an Iterator", ZSTR_VAL(ce->name));
}
ZVAL_UNDEF(EX_VAR(opline->result.var));
return 1;
}
iter->index = 0;
if (iter->funcs->rewind) {
iter->funcs->rewind(iter);
if (UNEXPECTED(EG(exception) != NULL)) {
OBJ_RELEASE(&iter->std);
ZVAL_UNDEF(EX_VAR(opline->result.var));
return 1;
}
}
is_empty = iter->funcs->valid(iter) != SUCCESS;
if (UNEXPECTED(EG(exception) != NULL)) {
OBJ_RELEASE(&iter->std);
ZVAL_UNDEF(EX_VAR(opline->result.var));
return 1;
}
iter->index = -1; /* will be set to 0 before using next handler */
ZVAL_OBJ(EX_VAR(opline->result.var), &iter->std);
Z_FE_ITER_P(EX_VAR(opline->result.var)) = (uint32_t)-1;
return is_empty;
}
/* }}} */
static zend_always_inline zend_result _zend_quick_get_constant(
const zval *key, uint32_t flags, bool check_defined_only OPLINE_DC EXECUTE_DATA_DC) /* {{{ */
{
zval *zv;
zend_constant *c = NULL;
/* null/true/false are resolved during compilation, so don't check for them here. */
zv = zend_hash_find_known_hash(EG(zend_constants), Z_STR_P(key));
if (zv) {
c = (zend_constant*)Z_PTR_P(zv);
} else if (flags & IS_CONSTANT_UNQUALIFIED_IN_NAMESPACE) {
key++;
zv = zend_hash_find_known_hash(EG(zend_constants), Z_STR_P(key));
if (zv) {
c = (zend_constant*)Z_PTR_P(zv);
}
}
if (!c) {
if (!check_defined_only) {
zend_throw_error(NULL, "Undefined constant \"%s\"", Z_STRVAL_P(RT_CONSTANT(opline, opline->op2)));
ZVAL_UNDEF(EX_VAR(opline->result.var));
}
return FAILURE;
}
if (!check_defined_only) {
ZVAL_COPY_OR_DUP(EX_VAR(opline->result.var), &c->value);
if (ZEND_CONSTANT_FLAGS(c) & CONST_DEPRECATED) {
zend_error(E_DEPRECATED, "Constant %s is deprecated", ZSTR_VAL(c->name));
return SUCCESS;
}
}
CACHE_PTR(opline->extended_value, c);
return SUCCESS;
}
/* }}} */
static zend_never_inline void ZEND_FASTCALL zend_quick_get_constant(
const zval *key, uint32_t flags OPLINE_DC EXECUTE_DATA_DC) /* {{{ */
{
_zend_quick_get_constant(key, flags, 0 OPLINE_CC EXECUTE_DATA_CC);
} /* }}} */
static zend_never_inline zend_result ZEND_FASTCALL zend_quick_check_constant(
const zval *key OPLINE_DC EXECUTE_DATA_DC) /* {{{ */
{
return _zend_quick_get_constant(key, 0, 1 OPLINE_CC EXECUTE_DATA_CC);
} /* }}} */
static zend_always_inline uint32_t zend_get_arg_offset_by_name(
zend_function *fbc, zend_string *arg_name, void **cache_slot) {
if (EXPECTED(*cache_slot == fbc)) {
return *(uintptr_t *)(cache_slot + 1);
}
// TODO: Use a hash table?
uint32_t num_args = fbc->common.num_args;
if (EXPECTED(fbc->type == ZEND_USER_FUNCTION)
|| EXPECTED(fbc->common.fn_flags & ZEND_ACC_USER_ARG_INFO)) {
for (uint32_t i = 0; i < num_args; i++) {
zend_arg_info *arg_info = &fbc->op_array.arg_info[i];
if (zend_string_equals(arg_name, arg_info->name)) {
*cache_slot = fbc;
*(uintptr_t *)(cache_slot + 1) = i;
return i;
}
}
} else {
for (uint32_t i = 0; i < num_args; i++) {
zend_internal_arg_info *arg_info = &fbc->internal_function.arg_info[i];
size_t len = strlen(arg_info->name);
if (len == ZSTR_LEN(arg_name) && !memcmp(arg_info->name, ZSTR_VAL(arg_name), len)) {
*cache_slot = fbc;
*(uintptr_t *)(cache_slot + 1) = i;
return i;
}
}
}
if (fbc->common.fn_flags & ZEND_ACC_VARIADIC) {
*cache_slot = fbc;
*(uintptr_t *)(cache_slot + 1) = fbc->common.num_args;
return fbc->common.num_args;
}
return (uint32_t) -1;
}
zval * ZEND_FASTCALL zend_handle_named_arg(
zend_execute_data **call_ptr, zend_string *arg_name,
uint32_t *arg_num_ptr, void **cache_slot) {
zend_execute_data *call = *call_ptr;
zend_function *fbc = call->func;
uint32_t arg_offset = zend_get_arg_offset_by_name(fbc, arg_name, cache_slot);
if (UNEXPECTED(arg_offset == (uint32_t) -1)) {
zend_throw_error(NULL, "Unknown named parameter $%s", ZSTR_VAL(arg_name));
return NULL;
}
zval *arg;
if (UNEXPECTED(arg_offset == fbc->common.num_args)) {
/* Unknown named parameter that will be collected into a variadic. */
if (!(ZEND_CALL_INFO(call) & ZEND_CALL_HAS_EXTRA_NAMED_PARAMS)) {
ZEND_ADD_CALL_FLAG(call, ZEND_CALL_HAS_EXTRA_NAMED_PARAMS);
call->extra_named_params = zend_new_array(0);
}
arg = zend_hash_add_empty_element(call->extra_named_params, arg_name);
if (!arg) {
zend_throw_error(NULL, "Named parameter $%s overwrites previous argument",
ZSTR_VAL(arg_name));
return NULL;
}
*arg_num_ptr = arg_offset + 1;
return arg;
}
uint32_t current_num_args = ZEND_CALL_NUM_ARGS(call);
// TODO: We may wish to optimize the arg_offset == current_num_args case,
// which is probably common (if the named parameters are in order of declaration).
if (arg_offset >= current_num_args) {
uint32_t new_num_args = arg_offset + 1;
ZEND_CALL_NUM_ARGS(call) = new_num_args;
uint32_t num_extra_args = new_num_args - current_num_args;
zend_vm_stack_extend_call_frame(call_ptr, current_num_args, num_extra_args);
call = *call_ptr;
arg = ZEND_CALL_VAR_NUM(call, arg_offset);
if (num_extra_args > 1) {
zval *zv = ZEND_CALL_VAR_NUM(call, current_num_args);
do {
ZVAL_UNDEF(zv);
zv++;
} while (zv != arg);
ZEND_ADD_CALL_FLAG(call, ZEND_CALL_MAY_HAVE_UNDEF);
}
} else {
arg = ZEND_CALL_VAR_NUM(call, arg_offset);
if (UNEXPECTED(!Z_ISUNDEF_P(arg))) {
zend_throw_error(NULL, "Named parameter $%s overwrites previous argument",
ZSTR_VAL(arg_name));
return NULL;
}
}
*arg_num_ptr = arg_offset + 1;
return arg;
}
static zend_execute_data *start_fake_frame(zend_execute_data *call, const zend_op *opline) {
zend_execute_data *old_prev_execute_data = call->prev_execute_data;
call->prev_execute_data = EG(current_execute_data);
call->opline = opline;
EG(current_execute_data) = call;
return old_prev_execute_data;
}
static void end_fake_frame(zend_execute_data *call, zend_execute_data *old_prev_execute_data) {
zend_execute_data *prev_execute_data = call->prev_execute_data;
EG(current_execute_data) = prev_execute_data;
call->prev_execute_data = old_prev_execute_data;
if (UNEXPECTED(EG(exception)) && ZEND_USER_CODE(prev_execute_data->func->common.type)) {
zend_rethrow_exception(prev_execute_data);
}
}
ZEND_API zend_result ZEND_FASTCALL zend_handle_undef_args(zend_execute_data *call) {
zend_function *fbc = call->func;
if (fbc->type == ZEND_USER_FUNCTION) {
zend_op_array *op_array = &fbc->op_array;
uint32_t num_args = ZEND_CALL_NUM_ARGS(call);
for (uint32_t i = 0; i < num_args; i++) {
zval *arg = ZEND_CALL_VAR_NUM(call, i);
if (!Z_ISUNDEF_P(arg)) {
continue;
}
zend_op *opline = &op_array->opcodes[i];
if (EXPECTED(opline->opcode == ZEND_RECV_INIT)) {
zval *default_value = RT_CONSTANT(opline, opline->op2);
if (Z_OPT_TYPE_P(default_value) == IS_CONSTANT_AST) {
if (UNEXPECTED(!RUN_TIME_CACHE(op_array))) {
init_func_run_time_cache(op_array);
}
void *run_time_cache = RUN_TIME_CACHE(op_array);
zval *cache_val =
(zval *) ((char *) run_time_cache + Z_CACHE_SLOT_P(default_value));
if (Z_TYPE_P(cache_val) != IS_UNDEF) {
/* We keep in cache only not refcounted values */
ZVAL_COPY_VALUE(arg, cache_val);
} else {
/* Update constant inside a temporary zval, to make sure the CONSTANT_AST
* value is not accessible through back traces. */
zval tmp;
ZVAL_COPY(&tmp, default_value);
zend_execute_data *old = start_fake_frame(call, opline);
zend_result ret = zval_update_constant_ex(&tmp, fbc->op_array.scope);
end_fake_frame(call, old);
if (UNEXPECTED(ret == FAILURE)) {
zval_ptr_dtor_nogc(&tmp);
return FAILURE;
}
ZVAL_COPY_VALUE(arg, &tmp);
if (!Z_REFCOUNTED(tmp)) {
ZVAL_COPY_VALUE(cache_val, &tmp);
}
}
} else {
ZVAL_COPY(arg, default_value);
}
} else {
ZEND_ASSERT(opline->opcode == ZEND_RECV);
zend_execute_data *old = start_fake_frame(call, opline);
zend_argument_error(zend_ce_argument_count_error, i + 1, "not passed");
end_fake_frame(call, old);
return FAILURE;
}
}
return SUCCESS;
} else {
if (fbc->common.fn_flags & ZEND_ACC_USER_ARG_INFO) {
/* Magic function, let it deal with it. */
return SUCCESS;
}
uint32_t num_args = ZEND_CALL_NUM_ARGS(call);
for (uint32_t i = 0; i < num_args; i++) {
zval *arg = ZEND_CALL_VAR_NUM(call, i);
if (!Z_ISUNDEF_P(arg)) {
continue;
}
zend_internal_arg_info *arg_info = &fbc->internal_function.arg_info[i];
if (i < fbc->common.required_num_args) {
zend_execute_data *old = start_fake_frame(call, NULL);
zend_argument_error(zend_ce_argument_count_error, i + 1, "not passed");
end_fake_frame(call, old);
return FAILURE;
}
zval default_value;
if (zend_get_default_from_internal_arg_info(&default_value, arg_info) == FAILURE) {
zend_execute_data *old = start_fake_frame(call, NULL);
zend_argument_error(zend_ce_argument_count_error, i + 1,
"must be passed explicitly, because the default value is not known");
end_fake_frame(call, old);
return FAILURE;
}
if (Z_TYPE(default_value) == IS_CONSTANT_AST) {
zend_execute_data *old = start_fake_frame(call, NULL);
zend_result ret = zval_update_constant_ex(&default_value, fbc->common.scope);
end_fake_frame(call, old);
if (ret == FAILURE) {
return FAILURE;
}
}
ZVAL_COPY_VALUE(arg, &default_value);
if (ZEND_ARG_SEND_MODE(arg_info) & ZEND_SEND_BY_REF) {
ZVAL_NEW_REF(arg, arg);
}
}
}
return SUCCESS;
}
ZEND_API void ZEND_FASTCALL zend_free_extra_named_params(zend_array *extra_named_params)
{
/* Extra named params may be shared. */
zend_array_release(extra_named_params);
}
#if defined(ZEND_VM_IP_GLOBAL_REG) && ((ZEND_VM_KIND == ZEND_VM_KIND_CALL) || (ZEND_VM_KIND == ZEND_VM_KIND_HYBRID))
/* Special versions of functions that sets EX(opline) before calling zend_vm_stack_extend() */
static zend_always_inline zend_execute_data *_zend_vm_stack_push_call_frame_ex(uint32_t used_stack, uint32_t call_info, zend_function *func, uint32_t num_args, void *object_or_called_scope) /* {{{ */
{
zend_execute_data *call = (zend_execute_data*)EG(vm_stack_top);
ZEND_ASSERT_VM_STACK_GLOBAL;
if (UNEXPECTED(used_stack > (size_t)(((char*)EG(vm_stack_end)) - (char*)call))) {
EX(opline) = opline; /* this is the only difference */
call = (zend_execute_data*)zend_vm_stack_extend(used_stack);
ZEND_ASSERT_VM_STACK_GLOBAL;
zend_vm_init_call_frame(call, call_info | ZEND_CALL_ALLOCATED, func, num_args, object_or_called_scope);
return call;
} else {
EG(vm_stack_top) = (zval*)((char*)call + used_stack);
zend_vm_init_call_frame(call, call_info, func, num_args, object_or_called_scope);
return call;
}
} /* }}} */
static zend_always_inline zend_execute_data *_zend_vm_stack_push_call_frame(uint32_t call_info, zend_function *func, uint32_t num_args, void *object_or_called_scope) /* {{{ */
{
uint32_t used_stack = zend_vm_calc_used_stack(num_args, func);
return _zend_vm_stack_push_call_frame_ex(used_stack, call_info,
func, num_args, object_or_called_scope);
} /* }}} */
#else
# define _zend_vm_stack_push_call_frame_ex zend_vm_stack_push_call_frame_ex
# define _zend_vm_stack_push_call_frame zend_vm_stack_push_call_frame
#endif
#ifdef ZEND_VM_TRACE_HANDLERS
# include "zend_vm_trace_handlers.h"
#elif defined(ZEND_VM_TRACE_LINES)
# include "zend_vm_trace_lines.h"
#elif defined(ZEND_VM_TRACE_MAP)
# include "zend_vm_trace_map.h"
#endif
#define ZEND_VM_NEXT_OPCODE_EX(check_exception, skip) \
CHECK_SYMBOL_TABLES() \
if (check_exception) { \
OPLINE = EX(opline) + (skip); \
} else { \
ZEND_ASSERT(!EG(exception)); \
OPLINE = opline + (skip); \
} \
ZEND_VM_CONTINUE()
#define ZEND_VM_NEXT_OPCODE_CHECK_EXCEPTION() \
ZEND_VM_NEXT_OPCODE_EX(1, 1)
#define ZEND_VM_NEXT_OPCODE() \
ZEND_VM_NEXT_OPCODE_EX(0, 1)
#define ZEND_VM_SET_NEXT_OPCODE(new_op) \
CHECK_SYMBOL_TABLES() \
OPLINE = new_op
#define ZEND_VM_SET_OPCODE(new_op) \
CHECK_SYMBOL_TABLES() \
OPLINE = new_op; \
ZEND_VM_INTERRUPT_CHECK()
#define ZEND_VM_SET_RELATIVE_OPCODE(opline, offset) \
ZEND_VM_SET_OPCODE(ZEND_OFFSET_TO_OPLINE(opline, offset))
#define ZEND_VM_JMP_EX(new_op, check_exception) do { \
if (check_exception && UNEXPECTED(EG(exception))) { \
HANDLE_EXCEPTION(); \
} \
ZEND_VM_SET_OPCODE(new_op); \
ZEND_VM_CONTINUE(); \
} while (0)
#define ZEND_VM_JMP(new_op) \
ZEND_VM_JMP_EX(new_op, 1)
#define ZEND_VM_INC_OPCODE() \
OPLINE++
#define ZEND_VM_REPEATABLE_OPCODE \
do {
#define ZEND_VM_REPEAT_OPCODE(_opcode) \
} while (UNEXPECTED((++opline)->opcode == _opcode)); \
OPLINE = opline; \
ZEND_VM_CONTINUE()
#define ZEND_VM_SMART_BRANCH(_result, _check) do { \
if ((_check) && UNEXPECTED(EG(exception))) { \
OPLINE = EX(opline); \
} else if (EXPECTED(opline->result_type == (IS_SMART_BRANCH_JMPZ|IS_TMP_VAR))) { \
if (_result) { \
ZEND_VM_SET_NEXT_OPCODE(opline + 2); \
} else { \
ZEND_VM_SET_OPCODE(OP_JMP_ADDR(opline + 1, (opline+1)->op2)); \
} \
} else if (EXPECTED(opline->result_type == (IS_SMART_BRANCH_JMPNZ|IS_TMP_VAR))) { \
if (!(_result)) { \
ZEND_VM_SET_NEXT_OPCODE(opline + 2); \
} else { \
ZEND_VM_SET_OPCODE(OP_JMP_ADDR(opline + 1, (opline+1)->op2)); \
} \
} else { \
ZVAL_BOOL(EX_VAR(opline->result.var), _result); \
ZEND_VM_SET_NEXT_OPCODE(opline + 1); \
} \
ZEND_VM_CONTINUE(); \
} while (0)
#define ZEND_VM_SMART_BRANCH_JMPZ(_result, _check) do { \
if ((_check) && UNEXPECTED(EG(exception))) { \
OPLINE = EX(opline); \
} else if (_result) { \
ZEND_VM_SET_NEXT_OPCODE(opline + 2); \
} else { \
ZEND_VM_SET_OPCODE(OP_JMP_ADDR(opline + 1, (opline+1)->op2)); \
} \
ZEND_VM_CONTINUE(); \
} while (0)
#define ZEND_VM_SMART_BRANCH_JMPNZ(_result, _check) do { \
if ((_check) && UNEXPECTED(EG(exception))) { \
OPLINE = EX(opline); \
} else if (!(_result)) { \
ZEND_VM_SET_NEXT_OPCODE(opline + 2); \
} else { \
ZEND_VM_SET_OPCODE(OP_JMP_ADDR(opline + 1, (opline+1)->op2)); \
} \
ZEND_VM_CONTINUE(); \
} while (0)
#define ZEND_VM_SMART_BRANCH_NONE(_result, _check) do { \
ZVAL_BOOL(EX_VAR(opline->result.var), _result); \
ZEND_VM_NEXT_OPCODE_EX(_check, 1); \
ZEND_VM_CONTINUE(); \
} while (0)
#define ZEND_VM_SMART_BRANCH_TRUE() do { \
if (EXPECTED(opline->result_type == (IS_SMART_BRANCH_JMPNZ|IS_TMP_VAR))) { \
ZEND_VM_SET_OPCODE(OP_JMP_ADDR(opline + 1, (opline+1)->op2)); \
} else if (EXPECTED(opline->result_type == (IS_SMART_BRANCH_JMPZ|IS_TMP_VAR))) { \
ZEND_VM_SET_NEXT_OPCODE(opline + 2); \
} else { \
ZVAL_TRUE(EX_VAR(opline->result.var)); \
ZEND_VM_SET_NEXT_OPCODE(opline + 1); \
} \
ZEND_VM_CONTINUE(); \
} while (0)
#define ZEND_VM_SMART_BRANCH_TRUE_JMPZ() do { \
ZEND_VM_SET_NEXT_OPCODE(opline + 2); \
ZEND_VM_CONTINUE(); \
} while (0)
#define ZEND_VM_SMART_BRANCH_TRUE_JMPNZ() do { \
ZEND_VM_SET_OPCODE(OP_JMP_ADDR(opline + 1, (opline+1)->op2)); \
ZEND_VM_CONTINUE(); \
} while (0)
#define ZEND_VM_SMART_BRANCH_TRUE_NONE() do { \
ZVAL_TRUE(EX_VAR(opline->result.var)); \
ZEND_VM_NEXT_OPCODE(); \
} while (0)
#define ZEND_VM_SMART_BRANCH_FALSE() do { \
if (EXPECTED(opline->result_type == (IS_SMART_BRANCH_JMPNZ|IS_TMP_VAR))) { \
ZEND_VM_SET_NEXT_OPCODE(opline + 2); \
} else if (EXPECTED(opline->result_type == (IS_SMART_BRANCH_JMPZ|IS_TMP_VAR))) { \
ZEND_VM_SET_OPCODE(OP_JMP_ADDR(opline + 1, (opline+1)->op2)); \
} else { \
ZVAL_FALSE(EX_VAR(opline->result.var)); \
ZEND_VM_SET_NEXT_OPCODE(opline + 1); \
} \
ZEND_VM_CONTINUE(); \
} while (0)
#define ZEND_VM_SMART_BRANCH_FALSE_JMPZ() do { \
ZEND_VM_SET_OPCODE(OP_JMP_ADDR(opline + 1, (opline+1)->op2)); \
ZEND_VM_CONTINUE(); \
} while (0)
#define ZEND_VM_SMART_BRANCH_FALSE_JMPNZ() do { \
ZEND_VM_SET_NEXT_OPCODE(opline + 2); \
ZEND_VM_CONTINUE(); \
} while (0)
#define ZEND_VM_SMART_BRANCH_FALSE_NONE() do { \
ZVAL_FALSE(EX_VAR(opline->result.var)); \
ZEND_VM_NEXT_OPCODE(); \
} while (0)
#ifdef __GNUC__
# define ZEND_VM_GUARD(name) __asm__("#" #name)
#else
# define ZEND_VM_GUARD(name)
#endif
#define UNDEF_RESULT() do { \
if (opline->result_type & (IS_VAR | IS_TMP_VAR)) { \
ZVAL_UNDEF(EX_VAR(opline->result.var)); \
} \
} while (0)
/* This callback disables optimization of "vm_stack_data" variable in VM */
ZEND_API void (ZEND_FASTCALL *zend_touch_vm_stack_data)(void *vm_stack_data) = NULL;
#include "zend_vm_execute.h"
ZEND_API zend_result zend_set_user_opcode_handler(zend_uchar opcode, user_opcode_handler_t handler)
{
if (opcode != ZEND_USER_OPCODE) {
if (handler == NULL) {
/* restore the original handler */
zend_user_opcodes[opcode] = opcode;
} else {
zend_user_opcodes[opcode] = ZEND_USER_OPCODE;
}
zend_user_opcode_handlers[opcode] = handler;
return SUCCESS;
}
return FAILURE;
}
ZEND_API user_opcode_handler_t zend_get_user_opcode_handler(zend_uchar opcode)
{
return zend_user_opcode_handlers[opcode];
}
ZEND_API zval *zend_get_zval_ptr(const zend_op *opline, int op_type, const znode_op *node, const zend_execute_data *execute_data)
{
zval *ret;
switch (op_type) {
case IS_CONST:
ret = RT_CONSTANT(opline, *node);
break;
case IS_TMP_VAR:
case IS_VAR:
case IS_CV:
ret = EX_VAR(node->var);
break;
default:
ret = NULL;
break;
}
return ret;
}
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