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zend_execute_API.c
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/*
+----------------------------------------------------------------------+
| Zend Engine |
+----------------------------------------------------------------------+
| Copyright (c) 1998-2014 Zend Technologies Ltd. (http://www.zend.com) |
+----------------------------------------------------------------------+
| This source file is subject to version 2.00 of the Zend license, |
| that is bundled with this package in the file LICENSE, and is |
| available through the world-wide-web at the following url: |
| http://www.zend.com/license/2_00.txt. |
| If you did not receive a copy of the Zend license and are unable to |
| obtain it through the world-wide-web, please send a note to |
| [email protected] so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Authors: Andi Gutmans <[email protected]> |
| Zeev Suraski <[email protected]> |
+----------------------------------------------------------------------+
*/
/* $Id$ */
#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_exceptions.h"
#include "zend_closures.h"
#include "zend_generators.h"
#include "zend_vm.h"
#include "zend_float.h"
#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>
#endif
ZEND_API void (*zend_execute_ex)(zend_execute_data *execute_data TSRMLS_DC);
ZEND_API void (*zend_execute_internal)(zend_execute_data *execute_data_ptr, zend_fcall_info *fci, int return_value_used TSRMLS_DC);
/* true globals */
ZEND_API const zend_fcall_info empty_fcall_info = { 0, NULL, NULL, NULL, NULL, 0, NULL, NULL, 0 };
ZEND_API const zend_fcall_info_cache empty_fcall_info_cache = { 0, NULL, NULL, NULL, NULL };
#ifdef ZEND_WIN32
#include <process.h>
static WNDCLASS wc;
static HWND timeout_window;
static HANDLE timeout_thread_event;
static HANDLE timeout_thread_handle;
static DWORD timeout_thread_id;
static int timeout_thread_initialized=0;
#endif
#if 0&&ZEND_DEBUG
static void (*original_sigsegv_handler)(int);
static void zend_handle_sigsegv(int dummy) /* {{{ */
{
fflush(stdout);
fflush(stderr);
if (original_sigsegv_handler == zend_handle_sigsegv) {
signal(SIGSEGV, original_sigsegv_handler);
} else {
signal(SIGSEGV, SIG_DFL);
}
{
TSRMLS_FETCH();
fprintf(stderr, "SIGSEGV caught on opcode %d on opline %d of %s() at %s:%d\n\n",
active_opline->opcode,
active_opline-EG(active_op_array)->opcodes,
get_active_function_name(TSRMLS_C),
zend_get_executed_filename(TSRMLS_C),
zend_get_executed_lineno(TSRMLS_C));
/* See http://support.microsoft.com/kb/190351 */
#ifdef PHP_WIN32
fflush(stderr);
#endif
}
if (original_sigsegv_handler!=zend_handle_sigsegv) {
original_sigsegv_handler(dummy);
}
}
/* }}} */
#endif
static void zend_extension_activator(zend_extension *extension TSRMLS_DC) /* {{{ */
{
if (extension->activate) {
extension->activate();
}
}
/* }}} */
static void zend_extension_deactivator(zend_extension *extension TSRMLS_DC) /* {{{ */
{
if (extension->deactivate) {
extension->deactivate();
}
}
/* }}} */
static int clean_non_persistent_function(zend_function *function TSRMLS_DC) /* {{{ */
{
return (function->type == ZEND_INTERNAL_FUNCTION) ? ZEND_HASH_APPLY_STOP : ZEND_HASH_APPLY_REMOVE;
}
/* }}} */
static int clean_non_persistent_function_full(zend_function *function TSRMLS_DC) /* {{{ */
{
return (function->type == ZEND_INTERNAL_FUNCTION) ? ZEND_HASH_APPLY_KEEP : ZEND_HASH_APPLY_REMOVE;
}
/* }}} */
static int clean_non_persistent_class(zend_class_entry **ce TSRMLS_DC) /* {{{ */
{
return ((*ce)->type == ZEND_INTERNAL_CLASS) ? ZEND_HASH_APPLY_STOP : ZEND_HASH_APPLY_REMOVE;
}
/* }}} */
static int clean_non_persistent_class_full(zend_class_entry **ce TSRMLS_DC) /* {{{ */
{
return ((*ce)->type == ZEND_INTERNAL_CLASS) ? ZEND_HASH_APPLY_KEEP : ZEND_HASH_APPLY_REMOVE;
}
/* }}} */
void init_executor(TSRMLS_D) /* {{{ */
{
zend_init_fpu(TSRMLS_C);
INIT_ZVAL(EG(uninitialized_zval));
/* trick to make uninitialized_zval never be modified, passed by ref, etc. */
Z_ADDREF(EG(uninitialized_zval));
INIT_ZVAL(EG(error_zval));
EG(uninitialized_zval_ptr)=&EG(uninitialized_zval);
EG(error_zval_ptr)=&EG(error_zval);
/* destroys stack frame, therefore makes core dumps worthless */
#if 0&&ZEND_DEBUG
original_sigsegv_handler = signal(SIGSEGV, zend_handle_sigsegv);
#endif
EG(return_value_ptr_ptr) = NULL;
EG(symtable_cache_ptr) = EG(symtable_cache) - 1;
EG(symtable_cache_limit) = EG(symtable_cache) + SYMTABLE_CACHE_SIZE - 1;
EG(no_extensions) = 0;
EG(function_table) = CG(function_table);
EG(class_table) = CG(class_table);
EG(in_execution) = 0;
EG(in_autoload) = NULL;
EG(autoload_func) = NULL;
EG(error_handling) = EH_NORMAL;
zend_vm_stack_init(TSRMLS_C);
zend_vm_stack_push((void *) NULL TSRMLS_CC);
zend_hash_init(&EG(symbol_table), 50, NULL, ZVAL_PTR_DTOR, 0);
EG(active_symbol_table) = &EG(symbol_table);
zend_llist_apply(&zend_extensions, (llist_apply_func_t) zend_extension_activator TSRMLS_CC);
EG(opline_ptr) = NULL;
zend_hash_init(&EG(included_files), 5, NULL, NULL, 0);
EG(ticks_count) = 0;
EG(user_error_handler) = NULL;
EG(current_execute_data) = NULL;
zend_stack_init(&EG(user_error_handlers_error_reporting));
zend_ptr_stack_init(&EG(user_error_handlers));
zend_ptr_stack_init(&EG(user_exception_handlers));
zend_objects_store_init(&EG(objects_store), 1024);
EG(full_tables_cleanup) = 0;
#ifdef ZEND_WIN32
EG(timed_out) = 0;
#endif
EG(exception) = NULL;
EG(prev_exception) = NULL;
EG(scope) = NULL;
EG(called_scope) = NULL;
EG(This) = NULL;
EG(active_op_array) = NULL;
EG(active) = 1;
EG(start_op) = NULL;
}
/* }}} */
static int zval_call_destructor(zval **zv TSRMLS_DC) /* {{{ */
{
if (Z_TYPE_PP(zv) == IS_OBJECT && Z_REFCOUNT_PP(zv) == 1) {
return ZEND_HASH_APPLY_REMOVE;
} else {
return ZEND_HASH_APPLY_KEEP;
}
}
/* }}} */
void shutdown_destructors(TSRMLS_D) /* {{{ */
{
zend_try {
int symbols;
do {
symbols = zend_hash_num_elements(&EG(symbol_table));
zend_hash_reverse_apply(&EG(symbol_table), (apply_func_t) zval_call_destructor TSRMLS_CC);
} while (symbols != zend_hash_num_elements(&EG(symbol_table)));
zend_objects_store_call_destructors(&EG(objects_store) TSRMLS_CC);
} zend_catch {
/* if we couldn't destruct cleanly, mark all objects as destructed anyway */
zend_objects_store_mark_destructed(&EG(objects_store) TSRMLS_CC);
} zend_end_try();
}
/* }}} */
void shutdown_executor(TSRMLS_D) /* {{{ */
{
zend_try {
/* Removed because this can not be safely done, e.g. in this situation:
Object 1 creates object 2
Object 3 holds reference to object 2.
Now when 1 and 2 are destroyed, 3 can still access 2 in its destructor, with
very problematic results */
/* zend_objects_store_call_destructors(&EG(objects_store) TSRMLS_CC); */
/* Moved after symbol table cleaners, because some of the cleaners can call
destructors, which would use EG(symtable_cache_ptr) and thus leave leaks */
/* while (EG(symtable_cache_ptr)>=EG(symtable_cache)) {
zend_hash_destroy(*EG(symtable_cache_ptr));
efree(*EG(symtable_cache_ptr));
EG(symtable_cache_ptr)--;
}
*/
zend_llist_apply(&zend_extensions, (llist_apply_func_t) zend_extension_deactivator TSRMLS_CC);
zend_hash_graceful_reverse_destroy(&EG(symbol_table));
} zend_end_try();
zend_try {
zval *zeh;
/* remove error handlers before destroying classes and functions,
* so that if handler used some class, crash would not happen */
if (EG(user_error_handler)) {
zeh = EG(user_error_handler);
EG(user_error_handler) = NULL;
zval_ptr_dtor(&zeh);
}
if (EG(user_exception_handler)) {
zeh = EG(user_exception_handler);
EG(user_exception_handler) = NULL;
zval_ptr_dtor(&zeh);
}
zend_stack_destroy(&EG(user_error_handlers_error_reporting));
zend_stack_init(&EG(user_error_handlers_error_reporting));
zend_ptr_stack_clean(&EG(user_error_handlers), ZVAL_DESTRUCTOR, 1);
zend_ptr_stack_clean(&EG(user_exception_handlers), ZVAL_DESTRUCTOR, 1);
} zend_end_try();
zend_try {
/* Cleanup static data for functions and arrays.
* We need a separate cleanup stage because of the following problem:
* Suppose we destroy class X, which destroys the class's function table,
* and in the function table we have function foo() that has static $bar.
* Now if an object of class X is assigned to $bar, its destructor will be
* called and will fail since X's function table is in mid-destruction.
* So we want first of all to clean up all data and then move to tables destruction.
* Note that only run-time accessed data need to be cleaned up, pre-defined data can
* not contain objects and thus are not probelmatic */
if (EG(full_tables_cleanup)) {
zend_hash_apply(EG(function_table), (apply_func_t) zend_cleanup_function_data_full TSRMLS_CC);
zend_hash_apply(EG(class_table), (apply_func_t) zend_cleanup_class_data TSRMLS_CC);
} else {
zend_hash_reverse_apply(EG(function_table), (apply_func_t) zend_cleanup_function_data TSRMLS_CC);
zend_hash_reverse_apply(EG(class_table), (apply_func_t) zend_cleanup_user_class_data TSRMLS_CC);
zend_cleanup_internal_classes(TSRMLS_C);
}
} zend_end_try();
zend_try {
zend_objects_store_free_object_storage(&EG(objects_store) TSRMLS_CC);
zend_vm_stack_destroy(TSRMLS_C);
/* Destroy all op arrays */
if (EG(full_tables_cleanup)) {
zend_hash_reverse_apply(EG(function_table), (apply_func_t) clean_non_persistent_function_full TSRMLS_CC);
zend_hash_reverse_apply(EG(class_table), (apply_func_t) clean_non_persistent_class_full TSRMLS_CC);
} else {
zend_hash_reverse_apply(EG(function_table), (apply_func_t) clean_non_persistent_function TSRMLS_CC);
zend_hash_reverse_apply(EG(class_table), (apply_func_t) clean_non_persistent_class TSRMLS_CC);
}
while (EG(symtable_cache_ptr)>=EG(symtable_cache)) {
zend_hash_destroy(*EG(symtable_cache_ptr));
FREE_HASHTABLE(*EG(symtable_cache_ptr));
EG(symtable_cache_ptr)--;
}
} zend_end_try();
zend_try {
clean_non_persistent_constants(TSRMLS_C);
} zend_end_try();
zend_try {
#if 0&&ZEND_DEBUG
signal(SIGSEGV, original_sigsegv_handler);
#endif
zend_hash_destroy(&EG(included_files));
zend_stack_destroy(&EG(user_error_handlers_error_reporting));
zend_ptr_stack_destroy(&EG(user_error_handlers));
zend_ptr_stack_destroy(&EG(user_exception_handlers));
zend_objects_store_destroy(&EG(objects_store));
if (EG(in_autoload)) {
zend_hash_destroy(EG(in_autoload));
FREE_HASHTABLE(EG(in_autoload));
}
} zend_end_try();
zend_shutdown_fpu(TSRMLS_C);
EG(active) = 0;
}
/* }}} */
/* return class name and "::" or "". */
ZEND_API const char *get_active_class_name(const char **space TSRMLS_DC) /* {{{ */
{
if (!zend_is_executing(TSRMLS_C)) {
if (space) {
*space = "";
}
return "";
}
switch (EG(current_execute_data)->function_state.function->type) {
case ZEND_USER_FUNCTION:
case ZEND_INTERNAL_FUNCTION:
{
zend_class_entry *ce = EG(current_execute_data)->function_state.function->common.scope;
if (space) {
*space = ce ? "::" : "";
}
return ce ? ce->name : "";
}
default:
if (space) {
*space = "";
}
return "";
}
}
/* }}} */
ZEND_API const char *get_active_function_name(TSRMLS_D) /* {{{ */
{
if (!zend_is_executing(TSRMLS_C)) {
return NULL;
}
switch (EG(current_execute_data)->function_state.function->type) {
case ZEND_USER_FUNCTION: {
const char *function_name = ((zend_op_array *) EG(current_execute_data)->function_state.function)->function_name;
if (function_name) {
return function_name;
} else {
return "main";
}
}
break;
case ZEND_INTERNAL_FUNCTION:
return ((zend_internal_function *) EG(current_execute_data)->function_state.function)->function_name;
break;
default:
return NULL;
}
}
/* }}} */
ZEND_API const char *zend_get_executed_filename(TSRMLS_D) /* {{{ */
{
if (EG(active_op_array)) {
return EG(active_op_array)->filename;
} else {
return "[no active file]";
}
}
/* }}} */
ZEND_API uint zend_get_executed_lineno(TSRMLS_D) /* {{{ */
{
if(EG(exception) && EG(opline_ptr) && active_opline->opcode == ZEND_HANDLE_EXCEPTION &&
active_opline->lineno == 0 && EG(opline_before_exception)) {
return EG(opline_before_exception)->lineno;
}
if (EG(opline_ptr)) {
return active_opline->lineno;
} else {
return 0;
}
}
/* }}} */
ZEND_API zend_bool zend_is_executing(TSRMLS_D) /* {{{ */
{
return EG(in_execution);
}
/* }}} */
ZEND_API void _zval_ptr_dtor(zval **zval_ptr ZEND_FILE_LINE_DC) /* {{{ */
{
TSRMLS_FETCH();
i_zval_ptr_dtor(*zval_ptr ZEND_FILE_LINE_RELAY_CC TSRMLS_CC);
}
/* }}} */
ZEND_API void _zval_internal_ptr_dtor(zval **zval_ptr ZEND_FILE_LINE_DC) /* {{{ */
{
#if DEBUG_ZEND>=2
printf("Reducing refcount for %x (%x): %d->%d\n", *zval_ptr, zval_ptr, Z_REFCOUNT_PP(zval_ptr), Z_REFCOUNT_PP(zval_ptr) - 1);
#endif
Z_DELREF_PP(zval_ptr);
if (Z_REFCOUNT_PP(zval_ptr) == 0) {
zval_internal_dtor(*zval_ptr);
free(*zval_ptr);
} else if (Z_REFCOUNT_PP(zval_ptr) == 1) {
Z_UNSET_ISREF_PP(zval_ptr);
}
}
/* }}} */
ZEND_API int zend_is_true(zval *op TSRMLS_DC) /* {{{ */
{
return i_zend_is_true(op TSRMLS_CC);
}
/* }}} */
#include "../TSRM/tsrm_strtok_r.h"
#define IS_VISITED_CONSTANT IS_CONSTANT_INDEX
#define IS_CONSTANT_VISITED(p) (Z_TYPE_P(p) & IS_VISITED_CONSTANT)
#define Z_REAL_TYPE_P(p) (Z_TYPE_P(p) & ~IS_VISITED_CONSTANT)
#define MARK_CONSTANT_VISITED(p) Z_TYPE_P(p) |= IS_VISITED_CONSTANT
static void zval_deep_copy(zval **p)
{
zval *value;
ALLOC_ZVAL(value);
*value = **p;
Z_TYPE_P(value) &= ~IS_CONSTANT_INDEX;
zval_copy_ctor(value);
Z_TYPE_P(value) = Z_TYPE_PP(p);
INIT_PZVAL(value);
*p = value;
}
ZEND_API int zval_update_constant_ex(zval **pp, void *arg, zend_class_entry *scope TSRMLS_DC) /* {{{ */
{
zval *p = *pp;
zend_bool inline_change = (zend_bool) (zend_uintptr_t) arg;
zval const_value;
char *colon;
if (IS_CONSTANT_VISITED(p)) {
zend_error(E_ERROR, "Cannot declare self-referencing constant '%s'", Z_STRVAL_P(p));
} else if ((Z_TYPE_P(p) & IS_CONSTANT_TYPE_MASK) == IS_CONSTANT) {
int refcount;
zend_uchar is_ref;
SEPARATE_ZVAL_IF_NOT_REF(pp);
p = *pp;
MARK_CONSTANT_VISITED(p);
refcount = Z_REFCOUNT_P(p);
is_ref = Z_ISREF_P(p);
if (!zend_get_constant_ex(p->value.str.val, p->value.str.len, &const_value, scope, Z_REAL_TYPE_P(p) TSRMLS_CC)) {
char *actual = Z_STRVAL_P(p);
if ((colon = (char*)zend_memrchr(Z_STRVAL_P(p), ':', Z_STRLEN_P(p)))) {
zend_error(E_ERROR, "Undefined class constant '%s'", Z_STRVAL_P(p));
Z_STRLEN_P(p) -= ((colon - Z_STRVAL_P(p)) + 1);
if (inline_change) {
colon = estrndup(colon, Z_STRLEN_P(p));
str_efree(Z_STRVAL_P(p));
Z_STRVAL_P(p) = colon;
} else {
Z_STRVAL_P(p) = colon + 1;
}
} else {
char *save = actual, *slash;
int actual_len = Z_STRLEN_P(p);
if ((Z_TYPE_P(p) & IS_CONSTANT_UNQUALIFIED) && (slash = (char *)zend_memrchr(actual, '\\', actual_len))) {
actual = slash + 1;
actual_len -= (actual - Z_STRVAL_P(p));
if (inline_change) {
actual = estrndup(actual, actual_len);
Z_STRVAL_P(p) = actual;
Z_STRLEN_P(p) = actual_len;
}
}
if (actual[0] == '\\') {
if (inline_change) {
memmove(Z_STRVAL_P(p), Z_STRVAL_P(p)+1, Z_STRLEN_P(p));
--Z_STRLEN_P(p);
} else {
++actual;
}
--actual_len;
}
if ((Z_TYPE_P(p) & IS_CONSTANT_UNQUALIFIED) == 0) {
int fix_save = 0;
if (save[0] == '\\') {
save++;
fix_save = 1;
}
zend_error(E_ERROR, "Undefined constant '%s'", save);
if (fix_save) {
save--;
}
if (inline_change) {
str_efree(save);
}
save = NULL;
}
if (inline_change && save && save != actual) {
str_efree(save);
}
zend_error(E_NOTICE, "Use of undefined constant %s - assumed '%s'", actual, actual);
p->type = IS_STRING;
if (!inline_change) {
Z_STRVAL_P(p) = actual;
Z_STRLEN_P(p) = actual_len;
zval_copy_ctor(p);
}
}
} else {
if (inline_change) {
str_efree(Z_STRVAL_P(p));
}
*p = const_value;
}
Z_SET_REFCOUNT_P(p, refcount);
Z_SET_ISREF_TO_P(p, is_ref);
} else if (Z_TYPE_P(p) == IS_CONSTANT_ARRAY) {
zval **element, *new_val;
char *str_index;
uint str_index_len;
ulong num_index;
int ret;
SEPARATE_ZVAL_IF_NOT_REF(pp);
p = *pp;
Z_TYPE_P(p) = IS_ARRAY;
if (!inline_change) {
zval *tmp;
HashTable *tmp_ht = NULL;
ALLOC_HASHTABLE(tmp_ht);
zend_hash_init(tmp_ht, zend_hash_num_elements(Z_ARRVAL_P(p)), NULL, ZVAL_PTR_DTOR, 0);
zend_hash_copy(tmp_ht, Z_ARRVAL_P(p), (copy_ctor_func_t) zval_deep_copy, (void *) &tmp, sizeof(zval *));
Z_ARRVAL_P(p) = tmp_ht;
}
/* First go over the array and see if there are any constant indices */
zend_hash_internal_pointer_reset(Z_ARRVAL_P(p));
while (zend_hash_get_current_data(Z_ARRVAL_P(p), (void **) &element) == SUCCESS) {
if (!(Z_TYPE_PP(element) & IS_CONSTANT_INDEX)) {
zend_hash_move_forward(Z_ARRVAL_P(p));
continue;
}
Z_TYPE_PP(element) &= ~IS_CONSTANT_INDEX;
if (zend_hash_get_current_key_ex(Z_ARRVAL_P(p), &str_index, &str_index_len, &num_index, 0, NULL) != HASH_KEY_IS_STRING) {
zend_hash_move_forward(Z_ARRVAL_P(p));
continue;
}
if (str_index[str_index_len - 2] == IS_CONSTANT_AST) {
zend_ast_evaluate(&const_value, *(zend_ast **)str_index, scope TSRMLS_CC);
zend_ast_destroy(*(zend_ast **)str_index);
} else if (!zend_get_constant_ex(str_index, str_index_len - 3, &const_value, scope, str_index[str_index_len - 2] TSRMLS_CC)) {
char *actual;
const char *save = str_index;
if ((colon = (char*)zend_memrchr(str_index, ':', str_index_len - 3))) {
zend_error(E_ERROR, "Undefined class constant '%s'", str_index);
str_index_len -= ((colon - str_index) + 1);
str_index = colon;
} else {
if (str_index[str_index_len - 2] & IS_CONSTANT_UNQUALIFIED) {
if ((actual = (char *)zend_memrchr(str_index, '\\', str_index_len - 3))) {
actual++;
str_index_len -= (actual - str_index);
str_index = actual;
}
}
if (str_index[0] == '\\') {
++str_index;
--str_index_len;
}
if (save[0] == '\\') {
++save;
}
if ((str_index[str_index_len - 2] & IS_CONSTANT_UNQUALIFIED) == 0) {
zend_error(E_ERROR, "Undefined constant '%s'", save);
}
zend_error(E_NOTICE, "Use of undefined constant %s - assumed '%s'", str_index, str_index);
}
ZVAL_STRINGL(&const_value, str_index, str_index_len-3, 1);
}
if (Z_REFCOUNT_PP(element) > 1) {
ALLOC_ZVAL(new_val);
*new_val = **element;
zval_copy_ctor(new_val);
Z_SET_REFCOUNT_P(new_val, 1);
Z_UNSET_ISREF_P(new_val);
/* preserve this bit for inheritance */
Z_TYPE_PP(element) |= IS_CONSTANT_INDEX;
zval_ptr_dtor(element);
*element = new_val;
}
switch (Z_TYPE(const_value)) {
case IS_STRING:
ret = zend_symtable_update_current_key(Z_ARRVAL_P(p), Z_STRVAL(const_value), Z_STRLEN(const_value) + 1, HASH_UPDATE_KEY_IF_BEFORE);
break;
case IS_BOOL:
case IS_LONG:
ret = zend_hash_update_current_key_ex(Z_ARRVAL_P(p), HASH_KEY_IS_LONG, NULL, 0, Z_LVAL(const_value), HASH_UPDATE_KEY_IF_BEFORE, NULL);
break;
case IS_DOUBLE:
ret = zend_hash_update_current_key_ex(Z_ARRVAL_P(p), HASH_KEY_IS_LONG, NULL, 0, zend_dval_to_lval(Z_DVAL(const_value)), HASH_UPDATE_KEY_IF_BEFORE, NULL);
break;
case IS_NULL:
ret = zend_hash_update_current_key_ex(Z_ARRVAL_P(p), HASH_KEY_IS_STRING, "", 1, 0, HASH_UPDATE_KEY_IF_BEFORE, NULL);
break;
default:
ret = SUCCESS;
break;
}
if (ret == SUCCESS) {
zend_hash_move_forward(Z_ARRVAL_P(p));
}
zval_dtor(&const_value);
}
zend_hash_apply_with_argument(Z_ARRVAL_P(p), (apply_func_arg_t) zval_update_constant_inline_change, (void *) scope TSRMLS_CC);
zend_hash_internal_pointer_reset(Z_ARRVAL_P(p));
} else if (Z_TYPE_P(p) == IS_CONSTANT_AST) {
SEPARATE_ZVAL_IF_NOT_REF(pp);
p = *pp;
zend_ast_evaluate(&const_value, Z_AST_P(p), scope TSRMLS_CC);
if (inline_change) {
zend_ast_destroy(Z_AST_P(p));
}
ZVAL_COPY_VALUE(p, &const_value);
}
return 0;
}
/* }}} */
ZEND_API int zval_update_constant_inline_change(zval **pp, void *scope TSRMLS_DC) /* {{{ */
{
return zval_update_constant_ex(pp, (void*)1, scope TSRMLS_CC);
}
/* }}} */
ZEND_API int zval_update_constant_no_inline_change(zval **pp, void *scope TSRMLS_DC) /* {{{ */
{
return zval_update_constant_ex(pp, (void*)0, scope TSRMLS_CC);
}
/* }}} */
ZEND_API int zval_update_constant(zval **pp, void *arg TSRMLS_DC) /* {{{ */
{
return zval_update_constant_ex(pp, arg, NULL TSRMLS_CC);
}
/* }}} */
int call_user_function(HashTable *function_table, zval **object_pp, zval *function_name, zval *retval_ptr, zend_uint param_count, zval *params[] TSRMLS_DC) /* {{{ */
{
zval ***params_array;
zend_uint i;
int ex_retval;
zval *local_retval_ptr = NULL;
if (param_count) {
params_array = (zval ***) emalloc(sizeof(zval **)*param_count);
for (i=0; i<param_count; i++) {
params_array[i] = ¶ms[i];
}
} else {
params_array = NULL;
}
ex_retval = call_user_function_ex(function_table, object_pp, function_name, &local_retval_ptr, param_count, params_array, 1, NULL TSRMLS_CC);
if (local_retval_ptr) {
COPY_PZVAL_TO_ZVAL(*retval_ptr, local_retval_ptr);
} else {
INIT_ZVAL(*retval_ptr);
}
if (params_array) {
efree(params_array);
}
return ex_retval;
}
/* }}} */
int call_user_function_ex(HashTable *function_table, zval **object_pp, zval *function_name, zval **retval_ptr_ptr, zend_uint param_count, zval **params[], int no_separation, HashTable *symbol_table TSRMLS_DC) /* {{{ */
{
zend_fcall_info fci;
fci.size = sizeof(fci);
fci.function_table = function_table;
fci.object_ptr = object_pp ? *object_pp : NULL;
fci.function_name = function_name;
fci.retval_ptr_ptr = retval_ptr_ptr;
fci.param_count = param_count;
fci.params = params;
fci.no_separation = (zend_bool) no_separation;
fci.symbol_table = symbol_table;
return zend_call_function(&fci, NULL TSRMLS_CC);
}
/* }}} */
int zend_call_function(zend_fcall_info *fci, zend_fcall_info_cache *fci_cache TSRMLS_DC) /* {{{ */
{
zend_uint i;
zval **original_return_value;
HashTable *calling_symbol_table;
zend_op_array *original_op_array;
zend_op **original_opline_ptr;
zend_class_entry *current_scope;
zend_class_entry *current_called_scope;
zend_class_entry *calling_scope = NULL;
zend_class_entry *called_scope = NULL;
zval *current_this;
zend_execute_data execute_data;
zend_fcall_info_cache fci_cache_local;
*fci->retval_ptr_ptr = NULL;
if (!EG(active)) {
return FAILURE; /* executor is already inactive */
}
if (EG(exception)) {
return FAILURE; /* we would result in an instable executor otherwise */
}
switch (fci->size) {
case sizeof(zend_fcall_info):
break; /* nothing to do currently */
default:
zend_error(E_ERROR, "Corrupted fcall_info provided to zend_call_function()");
break;
}
/* Initialize execute_data */
if (EG(current_execute_data)) {
execute_data = *EG(current_execute_data);
EX(op_array) = NULL;
EX(opline) = NULL;
EX(object) = NULL;
} else {
/* This only happens when we're called outside any execute()'s
* It shouldn't be strictly necessary to NULL execute_data out,
* but it may make bugs easier to spot
*/
memset(&execute_data, 0, sizeof(zend_execute_data));
}
if (!fci_cache || !fci_cache->initialized) {
char *callable_name;
char *error = NULL;
if (!fci_cache) {
fci_cache = &fci_cache_local;
}
if (!zend_is_callable_ex(fci->function_name, fci->object_ptr, IS_CALLABLE_CHECK_SILENT, &callable_name, NULL, fci_cache, &error TSRMLS_CC)) {
if (error) {
zend_error(E_WARNING, "Invalid callback %s, %s", callable_name, error);
efree(error);
}
if (callable_name) {
efree(callable_name);
}
return FAILURE;
} else if (error) {
/* Capitalize the first latter of the error message */
if (error[0] >= 'a' && error[0] <= 'z') {
error[0] += ('A' - 'a');
}
zend_error(E_STRICT, "%s", error);
efree(error);
}
efree(callable_name);
}
EX(function_state).function = fci_cache->function_handler;
calling_scope = fci_cache->calling_scope;
called_scope = fci_cache->called_scope;
fci->object_ptr = fci_cache->object_ptr;
EX(object) = fci->object_ptr;
if (fci->object_ptr && Z_TYPE_P(fci->object_ptr) == IS_OBJECT &&
(!EG(objects_store).object_buckets || !EG(objects_store).object_buckets[Z_OBJ_HANDLE_P(fci->object_ptr)].valid)) {
return FAILURE;
}
if (EX(function_state).function->common.fn_flags & (ZEND_ACC_ABSTRACT|ZEND_ACC_DEPRECATED)) {
if (EX(function_state).function->common.fn_flags & ZEND_ACC_ABSTRACT) {
zend_error_noreturn(E_ERROR, "Cannot call abstract method %s::%s()", EX(function_state).function->common.scope->name, EX(function_state).function->common.function_name);
}
if (EX(function_state).function->common.fn_flags & ZEND_ACC_DEPRECATED) {
zend_error(E_DEPRECATED, "Function %s%s%s() is deprecated",
EX(function_state).function->common.scope ? EX(function_state).function->common.scope->name : "",
EX(function_state).function->common.scope ? "::" : "",
EX(function_state).function->common.function_name);
}
}
ZEND_VM_STACK_GROW_IF_NEEDED(fci->param_count + 1);
for (i=0; i<fci->param_count; i++) {
zval *param;
if (ARG_SHOULD_BE_SENT_BY_REF(EX(function_state).function, i + 1)) {
if (!PZVAL_IS_REF(*fci->params[i]) && Z_REFCOUNT_PP(fci->params[i]) > 1) {
zval *new_zval;
if (fci->no_separation &&
!ARG_MAY_BE_SENT_BY_REF(EX(function_state).function, i + 1)) {
if (i || UNEXPECTED(ZEND_VM_STACK_ELEMETS(EG(argument_stack)) == (EG(argument_stack)->top))) {
/* hack to clean up the stack */
zend_vm_stack_push((void *) (zend_uintptr_t)i TSRMLS_CC);
zend_vm_stack_clear_multiple(0 TSRMLS_CC);
}
zend_error(E_WARNING, "Parameter %d to %s%s%s() expected to be a reference, value given",
i+1,
EX(function_state).function->common.scope ? EX(function_state).function->common.scope->name : "",
EX(function_state).function->common.scope ? "::" : "",
EX(function_state).function->common.function_name);
return FAILURE;
}
ALLOC_ZVAL(new_zval);
*new_zval = **fci->params[i];
zval_copy_ctor(new_zval);
Z_SET_REFCOUNT_P(new_zval, 1);
Z_DELREF_PP(fci->params[i]);
*fci->params[i] = new_zval;
}
Z_ADDREF_PP(fci->params[i]);
Z_SET_ISREF_PP(fci->params[i]);
param = *fci->params[i];
} else if (PZVAL_IS_REF(*fci->params[i]) &&
/* don't separate references for __call */
(EX(function_state).function->common.fn_flags & ZEND_ACC_CALL_VIA_HANDLER) == 0 ) {
ALLOC_ZVAL(param);
*param = **(fci->params[i]);
INIT_PZVAL(param);
zval_copy_ctor(param);
} else if (*fci->params[i] != &EG(uninitialized_zval)) {
Z_ADDREF_PP(fci->params[i]);
param = *fci->params[i];
} else {
ALLOC_ZVAL(param);
*param = **(fci->params[i]);
INIT_PZVAL(param);
}
zend_vm_stack_push(param TSRMLS_CC);
}
EX(function_state).arguments = zend_vm_stack_top(TSRMLS_C);
zend_vm_stack_push((void*)(zend_uintptr_t)fci->param_count TSRMLS_CC);
current_scope = EG(scope);
EG(scope) = calling_scope;
current_this = EG(This);
current_called_scope = EG(called_scope);
if (called_scope) {
EG(called_scope) = called_scope;
} else if (EX(function_state).function->type != ZEND_INTERNAL_FUNCTION) {
EG(called_scope) = NULL;
}
if (fci->object_ptr) {
if ((EX(function_state).function->common.fn_flags & ZEND_ACC_STATIC)) {
EG(This) = NULL;
} else {
EG(This) = fci->object_ptr;
if (!PZVAL_IS_REF(EG(This))) {
Z_ADDREF_P(EG(This)); /* For $this pointer */
} else {
zval *this_ptr;
ALLOC_ZVAL(this_ptr);
*this_ptr = *EG(This);
INIT_PZVAL(this_ptr);
zval_copy_ctor(this_ptr);
EG(This) = this_ptr;
}
}
} else {
EG(This) = NULL;
}
EX(prev_execute_data) = EG(current_execute_data);
EG(current_execute_data) = &execute_data;
if (EX(function_state).function->type == ZEND_USER_FUNCTION) {
calling_symbol_table = EG(active_symbol_table);
EG(scope) = EX(function_state).function->common.scope;
if (fci->symbol_table) {
EG(active_symbol_table) = fci->symbol_table;
} else {
EG(active_symbol_table) = NULL;
}
original_return_value = EG(return_value_ptr_ptr);
original_op_array = EG(active_op_array);
EG(return_value_ptr_ptr) = fci->retval_ptr_ptr;
EG(active_op_array) = (zend_op_array *) EX(function_state).function;
original_opline_ptr = EG(opline_ptr);
if (EG(active_op_array)->fn_flags & ZEND_ACC_GENERATOR) {
*fci->retval_ptr_ptr = zend_generator_create_zval(EG(active_op_array) TSRMLS_CC);
} else {
zend_execute(EG(active_op_array) TSRMLS_CC);
}
if (!fci->symbol_table && EG(active_symbol_table)) {
zend_clean_and_cache_symbol_table(EG(active_symbol_table) TSRMLS_CC);
}
EG(active_symbol_table) = calling_symbol_table;
EG(active_op_array) = original_op_array;
EG(return_value_ptr_ptr)=original_return_value;
EG(opline_ptr) = original_opline_ptr;
} else if (EX(function_state).function->type == ZEND_INTERNAL_FUNCTION) {
int call_via_handler = (EX(function_state).function->common.fn_flags & ZEND_ACC_CALL_VIA_HANDLER) != 0;
ALLOC_INIT_ZVAL(*fci->retval_ptr_ptr);
if (EX(function_state).function->common.scope) {
EG(scope) = EX(function_state).function->common.scope;
}
if (EXPECTED(zend_execute_internal == NULL)) {
/* saves one function call if zend_execute_internal is not used */
EX(function_state).function->internal_function.handler(fci->param_count, *fci->retval_ptr_ptr, fci->retval_ptr_ptr, fci->object_ptr, 1 TSRMLS_CC);
} else {
zend_execute_internal(&execute_data, fci, 1 TSRMLS_CC);
}
/* We shouldn't fix bad extensions here,
because it can break proper ones (Bug #34045)
if (!EX(function_state).function->common.return_reference)
{
INIT_PZVAL(*fci->retval_ptr_ptr);
}*/
if (EG(exception) && fci->retval_ptr_ptr) {
zval_ptr_dtor(fci->retval_ptr_ptr);
*fci->retval_ptr_ptr = NULL;
}
if (call_via_handler) {
/* We must re-initialize function again */
fci_cache->initialized = 0;
}
} else { /* ZEND_OVERLOADED_FUNCTION */
ALLOC_INIT_ZVAL(*fci->retval_ptr_ptr);
/* Not sure what should be done here if it's a static method */
if (fci->object_ptr) {
Z_OBJ_HT_P(fci->object_ptr)->call_method(EX(function_state).function->common.function_name, fci->param_count, *fci->retval_ptr_ptr, fci->retval_ptr_ptr, fci->object_ptr, 1 TSRMLS_CC);
} else {
zend_error_noreturn(E_ERROR, "Cannot call overloaded function for non-object");
}
if (EX(function_state).function->type == ZEND_OVERLOADED_FUNCTION_TEMPORARY) {
efree((char*)EX(function_state).function->common.function_name);