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zend_execute.c
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/*
+----------------------------------------------------------------------+
| Zend Engine |
+----------------------------------------------------------------------+
| Copyright (c) 1998-2015 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 |
| [email protected] so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Authors: Andi Gutmans <[email protected]> |
| Zeev Suraski <[email protected]> |
+----------------------------------------------------------------------+
*/
/* $Id$ */
#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"
/* Virtual current working directory support */
#include "zend_virtual_cwd.h"
#define _CONST_CODE 0
#define _TMP_CODE 1
#define _VAR_CODE 2
#define _UNUSED_CODE 3
#define _CV_CODE 4
typedef int (*incdec_t)(zval *);
#define get_zval_ptr(op_type, node, ex, should_free, type) _get_zval_ptr(op_type, node, ex, should_free, type)
#define get_zval_ptr_deref(op_type, node, ex, should_free, type) _get_zval_ptr_deref(op_type, node, ex, should_free, type)
#define get_zval_ptr_ptr(op_type, node, ex, should_free, type) _get_zval_ptr_ptr(op_type, node, ex, should_free, type)
#define get_zval_ptr_ptr_undef(op_type, node, ex, should_free, type) _get_zval_ptr_ptr(op_type, node, ex, should_free, type)
#define get_obj_zval_ptr(op_type, node, ex, should_free, type) _get_obj_zval_ptr(op_type, node, ex, should_free, type)
#define get_obj_zval_ptr_ptr(op_type, node, ex, should_free, type) _get_obj_zval_ptr_ptr(op_type, node, ex, should_free, type)
/* Prototypes */
static void zend_extension_statement_handler(const zend_extension *extension, zend_op_array *op_array);
static void zend_extension_fcall_begin_handler(const zend_extension *extension, zend_op_array *op_array);
static void zend_extension_fcall_end_handler(const zend_extension *extension, zend_op_array *op_array);
#define RETURN_VALUE_USED(opline) (!((opline)->result_type & EXT_TYPE_UNUSED))
static ZEND_FUNCTION(pass)
{
}
static const zend_internal_function zend_pass_function = {
ZEND_INTERNAL_FUNCTION, /* type */
0, /* fn_flags */
NULL, /* name */
NULL, /* scope */
NULL, /* prototype */
0, /* num_args */
0, /* required_num_args */
NULL, /* arg_info */
ZEND_FN(pass), /* handler */
NULL /* module */
};
#undef zval_ptr_dtor
#define zval_ptr_dtor(zv) i_zval_ptr_dtor(zv ZEND_FILE_LINE_CC)
#define PZVAL_LOCK(z) if (Z_REFCOUNTED_P(z)) Z_ADDREF_P((z))
#define SELECTIVE_PZVAL_LOCK(pzv, opline) if (RETURN_VALUE_USED(opline)) { PZVAL_LOCK(pzv); }
#define READY_TO_DESTROY(zv) \
(zv && Z_REFCOUNTED_P(zv) && Z_REFCOUNT_P(zv) == 1)
#define EXTRACT_ZVAL_PTR(zv) do { \
zval *__zv = (zv); \
if (Z_TYPE_P(__zv) == IS_INDIRECT) { \
ZVAL_COPY(__zv, Z_INDIRECT_P(__zv)); \
} \
} while (0)
#define FREE_OP(should_free) \
if (should_free) { \
zval_ptr_dtor_nogc(should_free); \
}
#define FREE_OP_VAR_PTR(should_free) \
if (should_free) { \
zval_ptr_dtor_nogc(should_free); \
}
/* End of zend_execute_locks.h */
#define CV_DEF_OF(i) (EX(func)->op_array.vars[i])
#define CTOR_CALL_BIT 0x1
#define CTOR_USED_BIT 0x2
#define IS_CTOR_CALL(ce) (((zend_uintptr_t)(ce)) & CTOR_CALL_BIT)
#define IS_CTOR_USED(ce) (((zend_uintptr_t)(ce)) & CTOR_USED_BIT)
#define ENCODE_CTOR(ce, used) \
((zend_class_entry*)(((zend_uintptr_t)(ce)) | CTOR_CALL_BIT | ((used) ? CTOR_USED_BIT : 0)))
#define DECODE_CTOR(ce) \
((zend_class_entry*)(((zend_uintptr_t)(ce)) & ~(CTOR_CALL_BIT|CTOR_USED_BIT)))
#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_FREE_PAGE_SIZE \
((ZEND_VM_STACK_PAGE_SLOTS - ZEND_VM_STACK_HEADER_SLOTS) * sizeof(zval))
#define ZEND_VM_STACK_PAGE_ALIGNED_SIZE(size) \
(((size) + (ZEND_VM_STACK_FREE_PAGE_SIZE - 1)) & ~ZEND_VM_STACK_PAGE_SIZE)
static zend_always_inline zend_vm_stack zend_vm_stack_new_page(size_t size, zend_vm_stack prev) {
zend_vm_stack page = (zend_vm_stack)emalloc(size);
page->top = ZEND_VM_STACK_ELEMETS(page);
page->end = (zval*)((char*)page + size);
page->prev = prev;
return page;
}
ZEND_API void zend_vm_stack_init(void)
{
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)->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 < ZEND_VM_STACK_FREE_PAGE_SIZE) ?
ZEND_VM_STACK_PAGE_SIZE : ZEND_VM_STACK_PAGE_ALIGNED_SIZE(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, const zend_execute_data *execute_data, zend_free_op *should_free)
{
zval *ret = EX_VAR(var);
*should_free = ret;
ZEND_ASSERT(Z_TYPE_P(ret) != IS_REFERENCE);
return ret;
}
static zend_always_inline zval *_get_zval_ptr_var(uint32_t var, const zend_execute_data *execute_data, zend_free_op *should_free)
{
zval *ret = EX_VAR(var);
*should_free = ret;
return ret;
}
static zend_always_inline zval *_get_zval_ptr_var_deref(uint32_t var, const zend_execute_data *execute_data, zend_free_op *should_free)
{
zval *ret = EX_VAR(var);
*should_free = ret;
ZVAL_DEREF(ret);
return ret;
}
static zend_never_inline zval *_get_zval_cv_lookup(zval *ptr, uint32_t var, int type, const zend_execute_data *execute_data)
{
zend_string *cv;
switch (type) {
case BP_VAR_R:
case BP_VAR_UNSET:
cv = CV_DEF_OF(EX_VAR_TO_NUM(var));
zend_error(E_NOTICE, "Undefined variable: %s", cv->val);
/* break missing intentionally */
case BP_VAR_IS:
ptr = &EG(uninitialized_zval);
break;
case BP_VAR_RW:
cv = CV_DEF_OF(EX_VAR_TO_NUM(var));
zend_error(E_NOTICE, "Undefined variable: %s", cv->val);
/* break missing intentionally */
case BP_VAR_W:
ZVAL_NULL(ptr);
break;
}
return ptr;
}
static zend_always_inline zval *_get_zval_cv_lookup_BP_VAR_R(zval *ptr, uint32_t var, const zend_execute_data *execute_data)
{
zend_string *cv = CV_DEF_OF(EX_VAR_TO_NUM(var));
zend_error(E_NOTICE, "Undefined variable: %s", cv->val);
return &EG(uninitialized_zval);
}
static zend_always_inline zval *_get_zval_cv_lookup_BP_VAR_UNSET(zval *ptr, uint32_t var, const zend_execute_data *execute_data)
{
zend_string *cv = CV_DEF_OF(EX_VAR_TO_NUM(var));
zend_error(E_NOTICE, "Undefined variable: %s", cv->val);
return &EG(uninitialized_zval);
}
static zend_always_inline zval *_get_zval_cv_lookup_BP_VAR_RW(zval *ptr, uint32_t var, const zend_execute_data *execute_data)
{
zend_string *cv = CV_DEF_OF(EX_VAR_TO_NUM(var));
ZVAL_NULL(ptr);
zend_error(E_NOTICE, "Undefined variable: %s", cv->val);
return ptr;
}
static zend_always_inline zval *_get_zval_cv_lookup_BP_VAR_W(zval *ptr, uint32_t var, const zend_execute_data *execute_data)
{
ZVAL_NULL(ptr);
return ptr;
}
static zend_always_inline zval *_get_zval_ptr_cv(const zend_execute_data *execute_data, uint32_t var, int type)
{
zval *ret = EX_VAR(var);
if (UNEXPECTED(Z_TYPE_P(ret) == IS_UNDEF)) {
return _get_zval_cv_lookup(ret, var, type, execute_data);
}
return ret;
}
static zend_always_inline zval *_get_zval_ptr_cv_deref(const zend_execute_data *execute_data, uint32_t var, int type)
{
zval *ret = EX_VAR(var);
if (UNEXPECTED(Z_TYPE_P(ret) == IS_UNDEF)) {
return _get_zval_cv_lookup(ret, var, type, execute_data);
}
ZVAL_DEREF(ret);
return ret;
}
static zend_always_inline zval *_get_zval_ptr_cv_BP_VAR_R(const zend_execute_data *execute_data, uint32_t var)
{
zval *ret = EX_VAR(var);
if (UNEXPECTED(Z_TYPE_P(ret) == IS_UNDEF)) {
return _get_zval_cv_lookup_BP_VAR_R(ret, var, execute_data);
}
return ret;
}
static zend_always_inline zval *_get_zval_ptr_cv_deref_BP_VAR_R(const zend_execute_data *execute_data, uint32_t var)
{
zval *ret = EX_VAR(var);
if (UNEXPECTED(Z_TYPE_P(ret) == IS_UNDEF)) {
return _get_zval_cv_lookup_BP_VAR_R(ret, var, execute_data);
}
ZVAL_DEREF(ret);
return ret;
}
static zend_always_inline zval *_get_zval_ptr_cv_BP_VAR_UNSET(const zend_execute_data *execute_data, uint32_t var)
{
zval *ret = EX_VAR(var);
if (UNEXPECTED(Z_TYPE_P(ret) == IS_UNDEF)) {
return _get_zval_cv_lookup_BP_VAR_UNSET(ret, var, execute_data);
}
return ret;
}
static zend_always_inline zval *_get_zval_ptr_cv_deref_BP_VAR_UNSET(const zend_execute_data *execute_data, uint32_t var)
{
zval *ret = EX_VAR(var);
if (UNEXPECTED(Z_TYPE_P(ret) == IS_UNDEF)) {
return _get_zval_cv_lookup_BP_VAR_UNSET(ret, var, execute_data);
}
ZVAL_DEREF(ret);
return ret;
}
static zend_always_inline zval *_get_zval_ptr_cv_BP_VAR_IS(const zend_execute_data *execute_data, uint32_t var)
{
zval *ret = EX_VAR(var);
return ret;
}
static zend_always_inline zval *_get_zval_ptr_cv_deref_BP_VAR_IS(const zend_execute_data *execute_data, uint32_t var)
{
zval *ret = EX_VAR(var);
ZVAL_DEREF(ret);
return ret;
}
static zend_always_inline zval *_get_zval_ptr_cv_BP_VAR_RW(const zend_execute_data *execute_data, uint32_t var)
{
zval *ret = EX_VAR(var);
if (UNEXPECTED(Z_TYPE_P(ret) == IS_UNDEF)) {
return _get_zval_cv_lookup_BP_VAR_RW(ret, var, execute_data);
}
return ret;
}
static zend_always_inline zval *_get_zval_ptr_cv_deref_BP_VAR_RW(const zend_execute_data *execute_data, uint32_t var)
{
zval *ret = EX_VAR(var);
if (UNEXPECTED(Z_TYPE_P(ret) == IS_UNDEF)) {
return _get_zval_cv_lookup_BP_VAR_RW(ret, var, execute_data);
}
ZVAL_DEREF(ret);
return ret;
}
static zend_always_inline zval *_get_zval_ptr_cv_BP_VAR_W(const zend_execute_data *execute_data, uint32_t var)
{
zval *ret = EX_VAR(var);
if (Z_TYPE_P(ret) == IS_UNDEF) {
return _get_zval_cv_lookup_BP_VAR_W(ret, var, execute_data);
}
return ret;
}
static zend_always_inline zval *_get_zval_ptr_cv_undef_BP_VAR_W(const zend_execute_data *execute_data, uint32_t var)
{
return EX_VAR(var);
}
static zend_always_inline zval *_get_zval_ptr_cv_deref_BP_VAR_W(const zend_execute_data *execute_data, uint32_t var)
{
zval *ret = EX_VAR(var);
if (Z_TYPE_P(ret) == IS_UNDEF) {
return _get_zval_cv_lookup_BP_VAR_W(ret, var, execute_data);
}
ZVAL_DEREF(ret);
return ret;
}
static zend_always_inline zval *_get_zval_ptr(int op_type, znode_op node, const zend_execute_data *execute_data, zend_free_op *should_free, int type)
{
if (op_type & (IS_TMP_VAR|IS_VAR)) {
if (op_type == IS_TMP_VAR) {
return _get_zval_ptr_tmp(node.var, execute_data, should_free);
} else {
ZEND_ASSERT(op_type == IS_VAR);
return _get_zval_ptr_var(node.var, execute_data, should_free);
}
} else {
*should_free = NULL;
if (op_type == IS_CONST) {
return EX_CONSTANT(node);
} else {
ZEND_ASSERT(op_type == IS_CV);
return _get_zval_ptr_cv(execute_data, node.var, type);
}
}
}
static zend_always_inline zval *_get_zval_ptr_deref(int op_type, znode_op node, const zend_execute_data *execute_data, zend_free_op *should_free, int type)
{
if (op_type & (IS_TMP_VAR|IS_VAR)) {
if (op_type == IS_TMP_VAR) {
return _get_zval_ptr_tmp(node.var, execute_data, should_free);
} else {
ZEND_ASSERT(op_type == IS_VAR);
return _get_zval_ptr_var_deref(node.var, execute_data, should_free);
}
} else {
*should_free = NULL;
if (op_type == IS_CONST) {
return EX_CONSTANT(node);
} else {
ZEND_ASSERT(op_type == IS_CV);
return _get_zval_ptr_cv_deref(execute_data, node.var, type);
}
}
}
static zend_always_inline zval *_get_zval_ptr_ptr_var(uint32_t var, const zend_execute_data *execute_data, zend_free_op *should_free)
{
zval *ret = EX_VAR(var);
if (EXPECTED(Z_TYPE_P(ret) == IS_INDIRECT)) {
*should_free = NULL;
ret = Z_INDIRECT_P(ret);
} else {
*should_free = ret;
if (Z_REFCOUNTED_P(ret) && Z_REFCOUNT_P(ret) > 1) {
*should_free = NULL;
Z_DELREF_P(ret);
}
}
return ret;
}
static inline zval *_get_zval_ptr_ptr(int op_type, znode_op node, const zend_execute_data *execute_data, zend_free_op *should_free, int type)
{
if (op_type == IS_CV) {
*should_free = NULL;
return _get_zval_ptr_cv(execute_data, node.var, type);
} else /* if (op_type == IS_VAR) */ {
ZEND_ASSERT(op_type == IS_VAR);
return _get_zval_ptr_ptr_var(node.var, execute_data, should_free);
}
}
static zend_always_inline zval *_get_obj_zval_ptr_unused(zend_execute_data *execute_data)
{
if (EXPECTED(Z_OBJ(EX(This)) != NULL)) {
return &EX(This);
} else {
zend_error_noreturn(E_ERROR, "Using $this when not in object context");
return NULL;
}
}
static inline zval *_get_obj_zval_ptr(int op_type, znode_op op, zend_execute_data *execute_data, zend_free_op *should_free, int type)
{
if (op_type == IS_UNUSED) {
if (EXPECTED(Z_OBJ(EX(This)) != NULL)) {
*should_free = NULL;
return &EX(This);
} else {
zend_error_noreturn(E_ERROR, "Using $this when not in object context");
}
}
return get_zval_ptr(op_type, op, execute_data, should_free, type);
}
static inline zval *_get_obj_zval_ptr_ptr(int op_type, znode_op node, zend_execute_data *execute_data, zend_free_op *should_free, int type)
{
if (op_type == IS_UNUSED) {
if (EXPECTED(Z_OBJ(EX(This)) != NULL)) {
*should_free = NULL;
return &EX(This);
} else {
zend_error_noreturn(E_ERROR, "Using $this when not in object context");
}
}
return get_zval_ptr_ptr(op_type, node, execute_data, should_free, type);
}
static inline void zend_assign_to_variable_reference(zval *variable_ptr, zval *value_ptr)
{
if (EXPECTED(variable_ptr != value_ptr)) {
zend_reference *ref;
ZVAL_MAKE_REF(value_ptr);
Z_ADDREF_P(value_ptr);
ref = Z_REF_P(value_ptr);
zval_ptr_dtor(variable_ptr);
ZVAL_REF(variable_ptr, ref);
} else {
ZVAL_MAKE_REF(variable_ptr);
}
}
/* this should modify object only if it's empty */
static inline int make_real_object(zval **object_ptr)
{
zval *object = *object_ptr;
ZVAL_DEREF(object);
if (UNEXPECTED(Z_TYPE_P(object) != IS_OBJECT)) {
if (EXPECTED(Z_TYPE_P(object) <= IS_FALSE)
|| (Z_TYPE_P(object) == IS_STRING && Z_STRLEN_P(object) == 0)) {
zval_ptr_dtor_nogc(object);
object_init(object);
zend_error(E_WARNING, "Creating default object from empty value");
} else {
return 0;
}
}
*object_ptr = object;
return 1;
}
ZEND_API char * zend_verify_internal_arg_class_kind(const zend_internal_arg_info *cur_arg_info, char **class_name, zend_class_entry **pce)
{
zend_string *key;
ALLOCA_FLAG(use_heap);
STR_ALLOCA_INIT(key, cur_arg_info->class_name, strlen(cur_arg_info->class_name), use_heap);
*pce = zend_fetch_class(key, (ZEND_FETCH_CLASS_AUTO | ZEND_FETCH_CLASS_NO_AUTOLOAD));
STR_ALLOCA_FREE(key, use_heap);
*class_name = (*pce) ? (*pce)->name->val : (char*)cur_arg_info->class_name;
if (*pce && (*pce)->ce_flags & ZEND_ACC_INTERFACE) {
return "implement interface ";
} else {
return "be an instance of ";
}
}
ZEND_API char * zend_verify_arg_class_kind(const zend_arg_info *cur_arg_info, char **class_name, zend_class_entry **pce)
{
*pce = zend_fetch_class(cur_arg_info->class_name, (ZEND_FETCH_CLASS_AUTO | ZEND_FETCH_CLASS_NO_AUTOLOAD));
*class_name = (*pce) ? (*pce)->name->val : cur_arg_info->class_name->val;
if (*pce && (*pce)->ce_flags & ZEND_ACC_INTERFACE) {
return "implement interface ";
} else {
return "be an instance of ";
}
}
ZEND_API void zend_verify_arg_error(int error_type, const zend_function *zf, uint32_t arg_num, const char *need_msg, const char *need_kind, const char *given_msg, const char *given_kind, zval *arg)
{
zend_execute_data *ptr = EG(current_execute_data)->prev_execute_data;
const char *fname = zf->common.function_name->val;
const char *fsep;
const char *fclass;
zval old_arg;
if (zf->common.scope) {
fsep = "::";
fclass = zf->common.scope->name->val;
} else {
fsep = "";
fclass = "";
}
if (zf->common.type == ZEND_USER_FUNCTION) {
if (arg) {
ZVAL_COPY_VALUE(&old_arg, arg);
ZVAL_UNDEF(arg);
}
if (ptr && ptr->func && ZEND_USER_CODE(ptr->func->common.type)) {
zend_error(error_type, "Argument %d passed to %s%s%s() must %s%s, %s%s given, called in %s on line %d and defined", arg_num, fclass, fsep, fname, need_msg, need_kind, given_msg, given_kind, ptr->func->op_array.filename->val, ptr->opline->lineno);
} else {
zend_error(error_type, "Argument %d passed to %s%s%s() must %s%s, %s%s given", arg_num, fclass, fsep, fname, need_msg, need_kind, given_msg, given_kind);
}
if (arg) {
ZVAL_COPY_VALUE(arg, &old_arg);
}
} else {
zend_error(error_type, "Argument %d passed to %s%s%s() must %s%s, %s%s given", arg_num, fclass, fsep, fname, need_msg, need_kind, given_msg, given_kind);
}
}
static int is_null_constant(zval *default_value)
{
if (Z_CONSTANT_P(default_value)) {
zval constant;
ZVAL_COPY_VALUE(&constant, default_value);
zval_update_constant(&constant, 0);
if (Z_TYPE(constant) == IS_NULL) {
return 1;
}
zval_dtor(&constant);
}
return 0;
}
static void zend_verify_internal_arg_type(zend_function *zf, uint32_t arg_num, zval *arg)
{
zend_internal_arg_info *cur_arg_info;
char *need_msg;
zend_class_entry *ce;
if (EXPECTED(arg_num <= zf->internal_function.num_args)) {
cur_arg_info = &zf->internal_function.arg_info[arg_num-1];
} else if (zf->internal_function.fn_flags & ZEND_ACC_VARIADIC) {
cur_arg_info = &zf->internal_function.arg_info[zf->internal_function.num_args];
} else {
return;
}
if (cur_arg_info->class_name) {
char *class_name;
ZVAL_DEREF(arg);
if (Z_TYPE_P(arg) == IS_OBJECT) {
need_msg = zend_verify_internal_arg_class_kind((zend_internal_arg_info*)cur_arg_info, &class_name, &ce);
if (!ce || !instanceof_function(Z_OBJCE_P(arg), ce)) {
zend_verify_arg_error(E_RECOVERABLE_ERROR, zf, arg_num, need_msg, class_name, "instance of ", Z_OBJCE_P(arg)->name->val, arg);
}
} else if (Z_TYPE_P(arg) != IS_NULL || !cur_arg_info->allow_null) {
need_msg = zend_verify_internal_arg_class_kind((zend_internal_arg_info*)cur_arg_info, &class_name, &ce);
zend_verify_arg_error(E_RECOVERABLE_ERROR, zf, arg_num, need_msg, class_name, zend_zval_type_name(arg), "", arg);
}
} else if (cur_arg_info->type_hint) {
if (cur_arg_info->type_hint == IS_ARRAY) {
ZVAL_DEREF(arg);
if (Z_TYPE_P(arg) != IS_ARRAY && (Z_TYPE_P(arg) != IS_NULL || !cur_arg_info->allow_null)) {
zend_verify_arg_error(E_RECOVERABLE_ERROR, zf, arg_num, "be of the type array", "", zend_zval_type_name(arg), "", arg);
}
} else if (cur_arg_info->type_hint == IS_CALLABLE) {
if (!zend_is_callable(arg, IS_CALLABLE_CHECK_SILENT, NULL) && (Z_TYPE_P(arg) != IS_NULL || !cur_arg_info->allow_null)) {
zend_verify_arg_error(E_RECOVERABLE_ERROR, zf, arg_num, "be callable", "", zend_zval_type_name(arg), "", arg);
}
#if ZEND_DEBUG
} else {
zend_error(E_ERROR, "Unknown typehint");
#endif
}
}
}
static void zend_verify_arg_type(zend_function *zf, uint32_t arg_num, zval *arg, zval *default_value)
{
zend_arg_info *cur_arg_info;
char *need_msg;
zend_class_entry *ce;
if (EXPECTED(arg_num <= zf->common.num_args)) {
cur_arg_info = &zf->common.arg_info[arg_num-1];
} else if (zf->common.fn_flags & ZEND_ACC_VARIADIC) {
cur_arg_info = &zf->common.arg_info[zf->common.num_args];
} else {
return;
}
if (cur_arg_info->class_name) {
char *class_name;
ZVAL_DEREF(arg);
if (Z_TYPE_P(arg) == IS_OBJECT) {
need_msg = zend_verify_arg_class_kind(cur_arg_info, &class_name, &ce);
if (!ce || !instanceof_function(Z_OBJCE_P(arg), ce)) {
zend_verify_arg_error(E_RECOVERABLE_ERROR, zf, arg_num, need_msg, class_name, "instance of ", Z_OBJCE_P(arg)->name->val, arg);
}
} else if (Z_TYPE_P(arg) != IS_NULL || !(cur_arg_info->allow_null || (default_value && is_null_constant(default_value)))) {
need_msg = zend_verify_arg_class_kind(cur_arg_info, &class_name, &ce);
zend_verify_arg_error(E_RECOVERABLE_ERROR, zf, arg_num, need_msg, class_name, zend_zval_type_name(arg), "", arg);
}
} else if (cur_arg_info->type_hint) {
if (cur_arg_info->type_hint == IS_ARRAY) {
ZVAL_DEREF(arg);
if (Z_TYPE_P(arg) != IS_ARRAY && (Z_TYPE_P(arg) != IS_NULL || !(cur_arg_info->allow_null || (default_value && is_null_constant(default_value))))) {
zend_verify_arg_error(E_RECOVERABLE_ERROR, zf, arg_num, "be of the type array", "", zend_zval_type_name(arg), "", arg);
}
} else if (cur_arg_info->type_hint == IS_CALLABLE) {
if (!zend_is_callable(arg, IS_CALLABLE_CHECK_SILENT, NULL) && (Z_TYPE_P(arg) != IS_NULL || !(cur_arg_info->allow_null || (default_value && is_null_constant(default_value))))) {
zend_verify_arg_error(E_RECOVERABLE_ERROR, zf, arg_num, "be callable", "", zend_zval_type_name(arg), "", arg);
}
#if ZEND_DEBUG
} else {
zend_error(E_ERROR, "Unknown typehint");
#endif
}
}
}
static inline int zend_verify_missing_arg_type(zend_function *zf, uint32_t arg_num)
{
zend_arg_info *cur_arg_info;
char *need_msg;
zend_class_entry *ce;
if (EXPECTED(arg_num <= zf->common.num_args)) {
cur_arg_info = &zf->common.arg_info[arg_num-1];
} else if (zf->common.fn_flags & ZEND_ACC_VARIADIC) {
cur_arg_info = &zf->common.arg_info[zf->common.num_args];
} else {
return 1;
}
if (cur_arg_info->class_name) {
char *class_name;
need_msg = zend_verify_arg_class_kind(cur_arg_info, &class_name, &ce);
zend_verify_arg_error(E_RECOVERABLE_ERROR, zf, arg_num, need_msg, class_name, "none", "", NULL);
return 0;
} else if (cur_arg_info->type_hint) {
if (cur_arg_info->type_hint == IS_ARRAY) {
zend_verify_arg_error(E_RECOVERABLE_ERROR, zf, arg_num, "be of the type array", "", "none", "", NULL);
} else if (cur_arg_info->type_hint == IS_CALLABLE) {
zend_verify_arg_error(E_RECOVERABLE_ERROR, zf, arg_num, "be callable", "", "none", "", NULL);
#if ZEND_DEBUG
} else {
zend_error(E_ERROR, "Unknown typehint");
#endif
}
return 0;
}
return 1;
}
static void zend_verify_missing_arg(zend_execute_data *execute_data, uint32_t arg_num)
{
if (EXPECTED(!(EX(func)->common.fn_flags & ZEND_ACC_HAS_TYPE_HINTS)) ||
zend_verify_missing_arg_type(EX(func), arg_num)) {
const char *class_name = EX(func)->common.scope ? EX(func)->common.scope->name->val : "";
const char *space = EX(func)->common.scope ? "::" : "";
const char *func_name = EX(func)->common.function_name ? EX(func)->common.function_name->val : "main";
zend_execute_data *ptr = EX(prev_execute_data);
if (ptr && ptr->func && ZEND_USER_CODE(ptr->func->common.type)) {
zend_error(E_WARNING, "Missing argument %u for %s%s%s(), called in %s on line %d and defined", arg_num, class_name, space, func_name, ptr->func->op_array.filename->val, ptr->opline->lineno);
} else {
zend_error(E_WARNING, "Missing argument %u for %s%s%s()", arg_num, class_name, space, func_name);
}
}
}
static zend_always_inline void zend_assign_to_object(zval *retval, zval *object, uint32_t object_op_type, zval *property_name, uint32_t property_op_type, int value_type, znode_op value_op, const zend_execute_data *execute_data, void **cache_slot)
{
zend_free_op free_value;
zval *value = get_zval_ptr_deref(value_type, value_op, execute_data, &free_value, BP_VAR_R);
zval tmp;
if (object_op_type != IS_UNUSED && UNEXPECTED(Z_TYPE_P(object) != IS_OBJECT)) {
do {
if (object_op_type == IS_VAR && UNEXPECTED(object == &EG(error_zval))) {
if (retval) {
ZVAL_NULL(retval);
}
FREE_OP(free_value);
return;
}
if (Z_ISREF_P(object)) {
object = Z_REFVAL_P(object);
if (EXPECTED(Z_TYPE_P(object) == IS_OBJECT)) {
break;
}
}
if (EXPECTED(Z_TYPE_P(object) <= IS_FALSE ||
(Z_TYPE_P(object) == IS_STRING && Z_STRLEN_P(object) == 0))) {
zend_object *obj;
zval_ptr_dtor(object);
object_init(object);
Z_ADDREF_P(object);
obj = Z_OBJ_P(object);
zend_error(E_WARNING, "Creating default object from empty value");
if (GC_REFCOUNT(obj) == 1) {
/* the enclosing container was deleted, obj is unreferenced */
if (retval) {
ZVAL_NULL(retval);
}
FREE_OP(free_value);
OBJ_RELEASE(obj);
return;
}
Z_DELREF_P(object);
} else {
zend_error(E_WARNING, "Attempt to assign property of non-object");
if (retval) {
ZVAL_NULL(retval);
}
FREE_OP(free_value);
return;
}
} while (0);
}
if (property_op_type == IS_CONST &&
EXPECTED(Z_OBJCE_P(object) == CACHED_PTR_EX(cache_slot))) {
uint32_t prop_offset = (uint32_t)(intptr_t)CACHED_PTR_EX(cache_slot + 1);
zend_object *zobj = Z_OBJ_P(object);
zval *property;
if (EXPECTED(prop_offset != ZEND_DYNAMIC_PROPERTY_OFFSET)) {
property = OBJ_PROP(zobj, prop_offset);
if (Z_TYPE_P(property) != IS_UNDEF) {
fast_assign:
value = zend_assign_to_variable(property, value, value_type);
if (retval && !EG(exception)) {
ZVAL_COPY(retval, value);
}
if (value_type == IS_VAR) {
FREE_OP(free_value);
}
return;
}
} else {
if (EXPECTED(zobj->properties != NULL)) {
property = zend_hash_find(zobj->properties, Z_STR_P(property_name));
if (property) {
goto fast_assign;
}
}
if (!zobj->ce->__set) {
if (EXPECTED(zobj->properties == NULL)) {
rebuild_object_properties(zobj);
}
/* separate our value if necessary */
if (value_type == IS_CONST) {
if (UNEXPECTED(Z_OPT_COPYABLE_P(value))) {
ZVAL_COPY_VALUE(&tmp, value);
zval_copy_ctor_func(&tmp);
value = &tmp;
}
} else if (value_type != IS_TMP_VAR &&
Z_REFCOUNTED_P(value)) {
Z_ADDREF_P(value);
}
zend_hash_add_new(zobj->properties, Z_STR_P(property_name), value);
if (retval && !EG(exception)) {
ZVAL_COPY(retval, value);
}
if (value_type == IS_VAR) {
FREE_OP(free_value);
}
return;
}
}
}
if (!Z_OBJ_HT_P(object)->write_property) {
zend_error(E_WARNING, "Attempt to assign property of non-object");
if (retval) {
ZVAL_NULL(retval);
}
FREE_OP(free_value);
return;
}
/* separate our value if necessary */
if (value_type == IS_CONST) {
if (UNEXPECTED(Z_OPT_COPYABLE_P(value))) {
ZVAL_COPY_VALUE(&tmp, value);
zval_copy_ctor_func(&tmp);
value = &tmp;
}
} else if (value_type != IS_TMP_VAR &&
Z_REFCOUNTED_P(value)) {
Z_ADDREF_P(value);
}
Z_OBJ_HT_P(object)->write_property(object, property_name, value, cache_slot);
if (retval && !EG(exception)) {
ZVAL_COPY(retval, value);
}
zval_ptr_dtor(value);
if (value_type == IS_VAR) {
FREE_OP(free_value);
}
}
static zend_always_inline void zend_assign_to_object_dim(zval *retval, zval *object, zval *property_name, int value_type, znode_op value_op, const zend_execute_data *execute_data)
{
zend_free_op free_value;
zval *value = get_zval_ptr_deref(value_type, value_op, execute_data, &free_value, BP_VAR_R);
zval tmp;
/* Note: property_name in this case is really the array index! */
if (!Z_OBJ_HT_P(object)->write_dimension) {
zend_error_noreturn(E_ERROR, "Cannot use object as array");
}
/* separate our value if necessary */
if (value_type == IS_CONST) {
if (UNEXPECTED(Z_OPT_COPYABLE_P(value))) {
ZVAL_COPY_VALUE(&tmp, value);
zval_copy_ctor_func(&tmp);
value = &tmp;
}
} else if (value_type != IS_TMP_VAR &&
Z_REFCOUNTED_P(value)) {
Z_ADDREF_P(value);
}
Z_OBJ_HT_P(object)->write_dimension(object, property_name, value);
if (retval && !EG(exception)) {
ZVAL_COPY(retval, value);
}
zval_ptr_dtor(value);
if (value_type == IS_VAR) {
FREE_OP(free_value);
}
}
static void zend_binary_assign_op_obj_dim(zval *object, zval *property, zval *value, zval *retval, int (*binary_op)(zval *result, zval *op1, zval *op2))
{
zval *z;
zval rv;
if (Z_OBJ_HT_P(object)->read_dimension &&
(z = Z_OBJ_HT_P(object)->read_dimension(object, property, BP_VAR_R, &rv)) != NULL) {
if (Z_TYPE_P(z) == IS_OBJECT && Z_OBJ_HT_P(z)->get) {
zval rv;
zval *value = Z_OBJ_HT_P(z)->get(z, &rv);
if (Z_REFCOUNT_P(z) == 0) {
zend_objects_store_del(Z_OBJ_P(z));
}
ZVAL_COPY_VALUE(z, value);
}
ZVAL_DEREF(z);
SEPARATE_ZVAL_NOREF(z);
binary_op(z, z, value);
Z_OBJ_HT_P(object)->write_dimension(object, property, z);
if (retval) {
ZVAL_COPY(retval, z);
}
zval_ptr_dtor(z);
} else {
zend_error(E_WARNING, "Attempt to assign property of non-object");
if (retval) {
ZVAL_NULL(retval);
}
}
}
static void zend_assign_to_string_offset(zval *str, zend_long offset, zval *value, zval *result)
{
zend_string *old_str;
if (offset < 0) {
zend_error(E_WARNING, "Illegal string offset: " ZEND_LONG_FMT, offset);
zend_string_release(Z_STR_P(str));
if (result) {
ZVAL_NULL(result);
}
return;
}
old_str = Z_STR_P(str);
if ((size_t)offset >= Z_STRLEN_P(str)) {
zend_long old_len = Z_STRLEN_P(str);
Z_STR_P(str) = zend_string_realloc(Z_STR_P(str), offset + 1, 0);
Z_TYPE_INFO_P(str) = IS_STRING_EX;
memset(Z_STRVAL_P(str) + old_len, ' ', offset - old_len);
Z_STRVAL_P(str)[offset+1] = 0;
} else if (!Z_REFCOUNTED_P(str)) {
Z_STR_P(str) = zend_string_init(Z_STRVAL_P(str), Z_STRLEN_P(str), 0);
Z_TYPE_INFO_P(str) = IS_STRING_EX;
}
if (Z_TYPE_P(value) != IS_STRING) {
zend_string *tmp = zval_get_string(value);
Z_STRVAL_P(str)[offset] = tmp->val[0];
zend_string_release(tmp);
} else {
Z_STRVAL_P(str)[offset] = Z_STRVAL_P(value)[0];
}
/*
* the value of an assignment to a string offset is undefined
T(result->u.var).var = &T->str_offset.str;
*/
zend_string_release(old_str);
if (result) {
zend_uchar c = (zend_uchar)Z_STRVAL_P(str)[offset];
if (CG(one_char_string)[c]) {