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php-src/Zend/zend_execute_API.c
Johannes Schlüter 45f6b4ce2f - MFH Improved version of ternary shortcut (Marcus)
2007-11-21 09:41:35 +00:00

1699 lines
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/*
+----------------------------------------------------------------------+
| Zend Engine |
+----------------------------------------------------------------------+
| Copyright (c) 1998-2007 Zend Technologies Ltd. (http://www.zend.com) |
+----------------------------------------------------------------------+
| This source file is subject to version 2.00 of the Zend license, |
| that is bundled with this package in the file LICENSE, and is |
| available through the world-wide-web at the following url: |
| http://www.zend.com/license/2_00.txt. |
| If you did not receive a copy of the Zend license and are unable to |
| obtain it through the world-wide-web, please send a note to |
| license@zend.com so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Authors: Andi Gutmans <andi@zend.com> |
| Zeev Suraski <zeev@zend.com> |
+----------------------------------------------------------------------+
*/
/* $Id$ */
#include <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_vm.h"
#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>
#endif
ZEND_API void (*zend_execute)(zend_op_array *op_array TSRMLS_DC);
ZEND_API void (*zend_execute_internal)(zend_execute_data *execute_data_ptr, int return_value_used TSRMLS_DC);
/* true globals */
ZEND_API zend_fcall_info empty_fcall_info = { 0, NULL, NULL, NULL, NULL, 0, NULL, NULL, 0 };
ZEND_API zend_fcall_info_cache empty_fcall_info_cache = { 0, 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));
}
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);
}
/* }}} */
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);
}
/* }}} */
void init_executor(TSRMLS_D) /* {{{ */
{
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);
zend_ptr_stack_init(&EG(arg_types_stack));
/* 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;
zend_ptr_stack_init(&EG(argument_stack));
zend_ptr_stack_push(&EG(argument_stack), (void *) NULL);
zend_hash_init(&EG(symbol_table), 50, NULL, ZVAL_PTR_DTOR, 0);
{
zval *globals;
ALLOC_ZVAL(globals);
Z_SET_REFCOUNT_P(globals, 1);
Z_SET_ISREF_P(globals);
Z_TYPE_P(globals) = IS_ARRAY;
Z_ARRVAL_P(globals) = &EG(symbol_table);
zend_hash_update(&EG(symbol_table), "GLOBALS", sizeof("GLOBALS"), &globals, sizeof(zval *), NULL);
}
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(scope) = NULL;
EG(called_scope) = NULL;
EG(This) = NULL;
EG(active_op_array) = NULL;
EG(active) = 1;
}
/* }}} */
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_dtor(zeh);
FREE_ZVAL(zeh);
}
if (EG(user_exception_handler)) {
zeh = EG(user_exception_handler);
EG(user_exception_handler) = NULL;
zval_dtor(zeh);
FREE_ZVAL(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);
} else {
zend_hash_reverse_apply(EG(function_table), (apply_func_t) zend_cleanup_function_data TSRMLS_CC);
}
zend_hash_apply(EG(class_table), (apply_func_t) zend_cleanup_class_data TSRMLS_CC);
zend_ptr_stack_destroy(&EG(argument_stack));
/* Destroy all op arrays */
if (EG(full_tables_cleanup)) {
zend_hash_apply(EG(function_table), (apply_func_t) clean_non_persistent_function_full TSRMLS_CC);
zend_hash_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_objects_store_free_object_storage(&EG(objects_store) TSRMLS_CC);
} 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_ptr_stack_destroy(&EG(arg_types_stack));
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();
EG(active) = 0;
}
/* }}} */
/* return class name and "::" or "". */
ZEND_API char *get_active_class_name(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 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: {
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 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(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) /* {{{ */
{
#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_dtor(*zval_ptr);
safe_free_zval_ptr_rel(*zval_ptr ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_CC);
} else if (Z_REFCOUNT_PP(zval_ptr) == 1) {
if ((*zval_ptr)->type == IS_OBJECT) {
TSRMLS_FETCH();
if (EG(ze1_compatibility_mode)) {
return;
}
}
Z_UNSET_ISREF_PP(zval_ptr);
}
}
/* }}} */
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) /* {{{ */
{
return i_zend_is_true(op);
}
/* }}} */
#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
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)) {
if ((colon = memchr(Z_STRVAL_P(p), ':', Z_STRLEN_P(p))) && colon[1] == ':') {
zend_error(E_ERROR, "Undefined class constant '%s'", Z_STRVAL_P(p));
}
zend_error(E_NOTICE, "Use of undefined constant %s - assumed '%s'", Z_STRVAL_P(p), Z_STRVAL_P(p));
p->type = IS_STRING;
if (!inline_change) {
zval_copy_ctor(p);
}
} else {
if (inline_change) {
STR_FREE(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;
SEPARATE_ZVAL_IF_NOT_REF(pp);
p = *pp;
Z_TYPE_P(p) = IS_ARRAY;
/* 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 (!zend_get_constant_ex(str_index, str_index_len - 3, &const_value, scope, str_index[str_index_len - 2] TSRMLS_CC)) {
if ((colon = memchr(str_index, ':', str_index_len - 3)) && colon[1] == ':') {
zend_error(E_ERROR, "Undefined class constant '%s'", str_index);
}
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:
zend_symtable_update_current_key(Z_ARRVAL_P(p), Z_STRVAL(const_value), Z_STRLEN(const_value) + 1);
break;
case IS_BOOL:
case IS_LONG:
zend_hash_update_current_key(Z_ARRVAL_P(p), HASH_KEY_IS_LONG, NULL, 0, Z_LVAL(const_value));
break;
case IS_DOUBLE:
zend_hash_update_current_key(Z_ARRVAL_P(p), HASH_KEY_IS_LONG, NULL, 0, (long)Z_DVAL(const_value));
break;
case IS_NULL:
zend_hash_update_current_key(Z_ARRVAL_P(p), HASH_KEY_IS_STRING, "", 1, 0);
break;
}
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, (void *) 1 TSRMLS_CC);
zend_hash_internal_pointer_reset(Z_ARRVAL_P(p));
}
return 0;
}
/* }}} */
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] = &params[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_pp = object_pp;
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 *check_scope_or_static = NULL;
zval *current_this;
zend_execute_data execute_data;
zval *method_name;
zval *params_array;
int call_via_handler = 0;
unsigned int clen;
int fname_len;
char *colon, *fname, *cname, *lcname;
*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) {
if (Z_TYPE_P(fci->function_name) == IS_ARRAY) { /* assume array($obj, $name) couple */
zval **tmp_object_ptr, **tmp_real_function_name;
if (zend_hash_index_find(Z_ARRVAL_P(fci->function_name), 0, (void **) &tmp_object_ptr) == FAILURE) {
return FAILURE;
}
if (zend_hash_index_find(Z_ARRVAL_P(fci->function_name), 1, (void **) &tmp_real_function_name) == FAILURE) {
return FAILURE;
}
fci->function_name = *tmp_real_function_name;
SEPARATE_ZVAL_IF_NOT_REF(tmp_object_ptr);
fci->object_pp = tmp_object_ptr;
Z_SET_ISREF_PP(fci->object_pp);
}
if (fci->object_pp && !*fci->object_pp) {
fci->object_pp = NULL;
}
if (fci->object_pp) {
if (Z_TYPE_PP(fci->object_pp) == IS_OBJECT
&& (!EG(objects_store).object_buckets || !EG(objects_store).object_buckets[Z_OBJ_HANDLE_PP(fci->object_pp)].valid)) {
return FAILURE;
}
/* TBI!! new object handlers */
if (Z_TYPE_PP(fci->object_pp) == IS_OBJECT) {
if (!IS_ZEND_STD_OBJECT(**fci->object_pp)) {
zend_error(E_WARNING, "Cannot use call_user_function on objects without a class entry");
return FAILURE;
}
calling_scope = Z_OBJCE_PP(fci->object_pp);
fci->function_table = &calling_scope->function_table;
EX(object) = *fci->object_pp;
} else if (Z_TYPE_PP(fci->object_pp) == IS_STRING) {
zend_class_entry **ce;
int found = FAILURE;
if (EG(active_op_array) && strcmp(Z_STRVAL_PP(fci->object_pp), "self") == 0) {
if (!EG(active_op_array)->scope) {
zend_error(E_ERROR, "Cannot access self:: when no class scope is active");
}
ce = &(EG(active_op_array)->scope);
found = (*ce != NULL?SUCCESS:FAILURE);
fci->object_pp = EG(This)?&EG(This):NULL;
EX(object) = EG(This);
} else if (strcmp(Z_STRVAL_PP(fci->object_pp), "parent") == 0 && EG(active_op_array)) {
if (!EG(active_op_array)->scope) {
zend_error(E_ERROR, "Cannot access parent:: when no class scope is active");
}
if (!EG(active_op_array)->scope->parent) {
zend_error(E_ERROR, "Cannot access parent:: when current class scope has no parent");
}
ce = &(EG(active_op_array)->scope->parent);
found = (*ce != NULL?SUCCESS:FAILURE);
fci->object_pp = EG(This)?&EG(This):NULL;
EX(object) = EG(This);
} else if (Z_STRLEN_PP(fci->object_pp) == sizeof("static") - 1 &&
!memcmp(Z_STRVAL_PP(fci->object_pp), "static", sizeof("static") - 1)
) {
if (!EG(called_scope)) {
zend_error(E_ERROR, "Cannot access static:: when no class scope is active");
}
ce = &(EG(called_scope));
found = (*ce != NULL?SUCCESS:FAILURE);
fci->object_pp = EG(This)?&EG(This):NULL;
EX(object) = EG(This);
} else {
zend_class_entry *scope;
scope = EG(active_op_array) ? EG(active_op_array)->scope : NULL;
found = zend_lookup_class(Z_STRVAL_PP(fci->object_pp), Z_STRLEN_PP(fci->object_pp), &ce TSRMLS_CC);
if (found == FAILURE) {
zend_error(E_ERROR, "Class '%s' not found", Z_STRVAL_PP(fci->object_pp));
}
if (scope && EG(This) &&
instanceof_function(Z_OBJCE_P(EG(This)), scope TSRMLS_CC) &&
instanceof_function(scope, *ce TSRMLS_CC)) {
fci->object_pp = &EG(This);
EX(object) = EG(This);
} else {
fci->object_pp = NULL;
}
}
if (found == FAILURE)
return FAILURE;
fci->function_table = &(*ce)->function_table;
calling_scope = *ce;
} else {
zend_error(E_NOTICE, "Non-callable array passed to zend_call_function()");
return FAILURE;
}
if (fci->function_table == NULL) {
return FAILURE;
}
}
if (Z_TYPE_P(fci->function_name) != IS_STRING) {
return FAILURE;
}
fname = Z_STRVAL_P(fci->function_name);
fname_len = Z_STRLEN_P(fci->function_name);
if (fname[0] == ':' && fname[1] == ':') {
fname += 2;
fname_len -=2;
}
EX(function_state).function = NULL;
lcname = zend_str_tolower_dup(fname, fname_len);
if (!fci->object_pp &&
zend_hash_find(fci->function_table, lcname, fname_len + 1, (void **)&EX(function_state).function) == SUCCESS
) {
efree(lcname);
} else {
efree(lcname);
cname = fname;
if ((colon = zend_memrchr(fname, ':', fname_len)) != NULL &&
colon > fname &&
*(colon - 1) == ':'
) {
clen = colon - fname - 1;
fname_len -= (clen + 2);
fname = colon + 1;
}
if (colon != NULL) {
zend_class_entry **pce, *ce_child = NULL;
lcname = zend_str_tolower_dup(cname, clen);
/* caution: lcname is not '\0' terminated */
if (calling_scope && clen == sizeof("self") - 1 &&
memcmp(lcname, "self", sizeof("self") - 1) == 0
) {
ce_child = EG(active_op_array) ? EG(active_op_array)->scope : NULL;
} else if (calling_scope && clen == sizeof("parent") - 1 &&
memcmp(lcname, "parent", sizeof("parent") - 1) == 0
) {
ce_child = EG(active_op_array) && EG(active_op_array)->scope ? EG(scope)->parent : NULL;
} else if (clen == sizeof("static") - 1 &&
memcmp(lcname, "static", sizeof("static") - 1)
) {
ce_child = EG(called_scope);
} else if (zend_lookup_class(lcname, clen, &pce TSRMLS_CC) == SUCCESS) {
ce_child = *pce;
}
efree(lcname);
if (!ce_child) {
zend_error(E_ERROR, "Cannot call method %s() or method does not exist", Z_STRVAL_P(fci->function_name));
return FAILURE;
}
check_scope_or_static = calling_scope;
fci->function_table = &ce_child->function_table;
calling_scope = ce_child;
}
if (fci->object_pp) {
if (Z_OBJ_HT_PP(fci->object_pp)->get_method == NULL) {
zend_error(E_ERROR, "Object does not support method calls");
}
EX(function_state).function =
Z_OBJ_HT_PP(fci->object_pp)->get_method(fci->object_pp, fname, fname_len TSRMLS_CC);
if (EX(function_state).function && calling_scope != EX(function_state).function->common.scope) {
char *function_name_lc = zend_str_tolower_dup(fname, fname_len);
if (zend_hash_find(&calling_scope->function_table, function_name_lc, fname_len + 1, (void **) &EX(function_state).function) == FAILURE) {
efree(function_name_lc);
zend_error(E_ERROR, "Cannot call method %s::%s() or method does not exist", calling_scope->name, fname);
}
efree(function_name_lc);
}
} else if (calling_scope) {
char *function_name_lc = zend_str_tolower_dup(fname, fname_len);
if (calling_scope->get_static_method) {
EX(function_state).function = calling_scope->get_static_method(calling_scope, function_name_lc, fname_len TSRMLS_CC);
} else {
EX(function_state).function = zend_std_get_static_method(calling_scope, function_name_lc, fname_len TSRMLS_CC);
}
efree(function_name_lc);
if (check_scope_or_static && EX(function_state).function
&& !(EX(function_state).function->common.fn_flags & ZEND_ACC_STATIC)
&& !instanceof_function(check_scope_or_static, calling_scope TSRMLS_CC)) {
zend_error(E_ERROR, "Cannot call method %s() of class %s which is not a derived from %s", Z_STRVAL_P(fci->function_name), calling_scope->name, check_scope_or_static->name);
return FAILURE;
}
}
}
if (EX(function_state).function == NULL) {
/* try calling __call */
if (calling_scope && calling_scope->__call) {
EX(function_state).function = calling_scope->__call;
/* prepare params */
ALLOC_INIT_ZVAL(method_name);
ZVAL_STRINGL(method_name, fname, fname_len, 0);
ALLOC_INIT_ZVAL(params_array);
array_init(params_array);
call_via_handler = 1;
} else {
return FAILURE;
}
}
if (fci_cache &&
(EX(function_state).function->type != ZEND_INTERNAL_FUNCTION ||
((zend_internal_function*)EX(function_state).function)->handler != zend_std_call_user_call)
) {
fci_cache->function_handler = EX(function_state).function;
fci_cache->object_pp = fci->object_pp;
fci_cache->calling_scope = calling_scope;
fci_cache->initialized = 1;
}
} else {
EX(function_state).function = fci_cache->function_handler;
calling_scope = fci_cache->calling_scope;
fci->object_pp = fci_cache->object_pp;
EX(object) = fci->object_pp ? *fci->object_pp : NULL;
if (fci->object_pp && *fci->object_pp && Z_TYPE_PP(fci->object_pp) == IS_OBJECT
&& (!EG(objects_store).object_buckets || !EG(objects_store).object_buckets[Z_OBJ_HANDLE_PP(fci->object_pp)].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_STRICT, "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);
}
}
for (i=0; i<fci->param_count; i++) {
zval *param;
if (ARG_SHOULD_BE_SENT_BY_REF(EX(function_state).function, i + 1)
&& !PZVAL_IS_REF(*fci->params[i])) {
if (Z_REFCOUNT_PP(fci->params[i]) > 1) {
zval *new_zval;
if (fci->no_separation) {
if(i) {
/* hack to clean up the stack */
zend_ptr_stack_n_push(&EG(argument_stack), 2, (void *) (zend_uintptr_t) i, NULL);
zend_ptr_stack_clear_multiple(TSRMLS_C);
}
if (call_via_handler) {
zval_ptr_dtor(&method_name);
zval_ptr_dtor(&params_array);
}
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 (*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);
}
if (call_via_handler) {
add_next_index_zval(params_array, param);
} else {
zend_ptr_stack_push(&EG(argument_stack), param);
}
}
if (call_via_handler) {
zend_ptr_stack_push(&EG(argument_stack), method_name);
zend_ptr_stack_push(&EG(argument_stack), params_array);
fci->param_count = 2;
}
zend_ptr_stack_2_push(&EG(argument_stack), (void *) (zend_uintptr_t) fci->param_count, NULL);
current_scope = EG(scope);
EG(scope) = calling_scope;
current_this = EG(This);
current_called_scope = EG(called_scope);
if (calling_scope) {
EG(called_scope) = calling_scope;
} else if (EX(function_state).function->type != ZEND_INTERNAL_FUNCTION) {
EG(called_scope) = NULL;
}
if (fci->object_pp) {
if ((EX(function_state).function->common.fn_flags & ZEND_ACC_STATIC)) {
EG(This) = NULL;
} else {
EG(This) = *fci->object_pp;
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;
if (calling_scope && !(EX(function_state).function->common.fn_flags & ZEND_ACC_STATIC)) {
int severity;
if (EX(function_state).function->common.fn_flags & ZEND_ACC_ALLOW_STATIC) {
severity = E_STRICT;
} else {
severity = E_ERROR;
}
zend_error(severity, "Non-static method %s::%s() cannot be called statically", calling_scope->name, EX(function_state).function->common.function_name);
}
}
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 {
ALLOC_HASHTABLE(EG(active_symbol_table));
zend_hash_init(EG(active_symbol_table), 0, NULL, ZVAL_PTR_DTOR, 0);
}
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);
zend_execute(EG(active_op_array) TSRMLS_CC);
if (!fci->symbol_table) {
zend_hash_destroy(EG(active_symbol_table));
FREE_HASHTABLE(EG(active_symbol_table));
}
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 {
ALLOC_INIT_ZVAL(*fci->retval_ptr_ptr);
if (EX(function_state).function->common.scope) {
EG(scope) = EX(function_state).function->common.scope;
}
((zend_internal_function *) EX(function_state).function)->handler(fci->param_count, *fci->retval_ptr_ptr, fci->retval_ptr_ptr, (fci->object_pp?*fci->object_pp:NULL), 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);
}*/
}
zend_ptr_stack_clear_multiple(TSRMLS_C);
if (call_via_handler) {
zval_ptr_dtor(&method_name);
zval_ptr_dtor(&params_array);
}
if (EG(This)) {
zval_ptr_dtor(&EG(This));
}
EG(called_scope) = current_called_scope;
EG(scope) = current_scope;
EG(This) = current_this;
EG(current_execute_data) = EX(prev_execute_data);
if (EG(exception)) {
zend_throw_exception_internal(NULL TSRMLS_CC);
}
return SUCCESS;
}
/* }}} */
ZEND_API int zend_lookup_class_ex(const char *name, int name_length, int use_autoload, zend_class_entry ***ce TSRMLS_DC) /* {{{ */
{
zval **args[1];
zval autoload_function;
zval *class_name_ptr;
zval *retval_ptr = NULL;
int retval;
char *lc_name;
char *lc_free;
zval *exception;
char dummy = 1;
zend_fcall_info fcall_info;
zend_fcall_info_cache fcall_cache;
if (name == NULL || !name_length) {
return FAILURE;
}
lc_free = lc_name = do_alloca(name_length + 1);
zend_str_tolower_copy(lc_name, name, name_length);
if (lc_name[0] == ':' && lc_name[1] == ':') {
lc_name += 2;
name_length -= 2;
}
if (zend_hash_find(EG(class_table), lc_name, name_length + 1, (void **) ce) == SUCCESS) {
free_alloca(lc_free);
return SUCCESS;
}
/* The compiler is not-reentrant. Make sure we __autoload() only during run-time
* (doesn't impact fuctionality of __autoload()
*/
if (!use_autoload || zend_is_compiling(TSRMLS_C)) {
free_alloca(lc_free);
return FAILURE;
}
if (EG(in_autoload) == NULL) {
ALLOC_HASHTABLE(EG(in_autoload));
zend_hash_init(EG(in_autoload), 0, NULL, NULL, 0);
}
if (zend_hash_add(EG(in_autoload), lc_name, name_length + 1, (void**)&dummy, sizeof(char), NULL) == FAILURE) {
free_alloca(lc_free);
return FAILURE;
}
ZVAL_STRINGL(&autoload_function, ZEND_AUTOLOAD_FUNC_NAME, sizeof(ZEND_AUTOLOAD_FUNC_NAME) - 1, 0);
ALLOC_ZVAL(class_name_ptr);
INIT_PZVAL(class_name_ptr);
ZVAL_STRINGL(class_name_ptr, name, name_length, 1);
args[0] = &class_name_ptr;
fcall_info.size = sizeof(fcall_info);
fcall_info.function_table = EG(function_table);
fcall_info.function_name = &autoload_function;
fcall_info.symbol_table = NULL;
fcall_info.retval_ptr_ptr = &retval_ptr;
fcall_info.param_count = 1;
fcall_info.params = args;
fcall_info.object_pp = NULL;
fcall_info.no_separation = 1;
fcall_cache.initialized = EG(autoload_func) ? 1 : 0;
fcall_cache.function_handler = EG(autoload_func);
fcall_cache.calling_scope = NULL;
fcall_cache.object_pp = NULL;
exception = EG(exception);
EG(exception) = NULL;
retval = zend_call_function(&fcall_info, &fcall_cache TSRMLS_CC);
EG(autoload_func) = fcall_cache.function_handler;
zval_ptr_dtor(&class_name_ptr);
zend_hash_del(EG(in_autoload), lc_name, name_length + 1);
if (retval == FAILURE) {
EG(exception) = exception;
free_alloca(lc_free);
return FAILURE;
}
if (EG(exception) && exception) {
free_alloca(lc_free);
zend_error(E_ERROR, "Function %s(%s) threw an exception of type '%s'", ZEND_AUTOLOAD_FUNC_NAME, name, Z_OBJCE_P(EG(exception))->name);
return FAILURE;
}
if (!EG(exception)) {
EG(exception) = exception;
}
if (retval_ptr) {
zval_ptr_dtor(&retval_ptr);
}
retval = zend_hash_find(EG(class_table), lc_name, name_length + 1, (void **) ce);
free_alloca(lc_free);
return retval;
}
/* }}} */
ZEND_API int zend_lookup_class(const char *name, int name_length, zend_class_entry ***ce TSRMLS_DC) /* {{{ */
{
return zend_lookup_class_ex(name, name_length, 1, ce TSRMLS_CC);
}
/* }}} */
ZEND_API int zend_eval_string(char *str, zval *retval_ptr, char *string_name TSRMLS_DC) /* {{{ */
{
zval pv;
zend_op_array *new_op_array;
zend_op_array *original_active_op_array = EG(active_op_array);
zend_uchar original_handle_op_arrays;
int retval;
if (retval_ptr) {
int l = strlen(str);
Z_STRLEN(pv) = l + sizeof("return ;") - 1;
Z_STRVAL(pv) = emalloc(Z_STRLEN(pv) + 1);
memcpy(Z_STRVAL(pv), "return ", sizeof("return ") - 1);
memcpy(Z_STRVAL(pv) + sizeof("return ") - 1, str, l);
Z_STRVAL(pv)[Z_STRLEN(pv) - 2] = ' ';
Z_STRVAL(pv)[Z_STRLEN(pv) - 1] = ';';
Z_STRVAL(pv)[Z_STRLEN(pv)] = '\0';
} else {
Z_STRLEN(pv) = strlen(str);
Z_STRVAL(pv) = estrndup(str, Z_STRLEN(pv));
}
Z_TYPE(pv) = IS_STRING;
/*printf("Evaluating '%s'\n", pv.value.str.val);*/
original_handle_op_arrays = CG(handle_op_arrays);
CG(handle_op_arrays) = 0;
new_op_array = zend_compile_string(&pv, string_name TSRMLS_CC);
CG(handle_op_arrays) = original_handle_op_arrays;
if (new_op_array) {
zval *local_retval_ptr=NULL;
zval **original_return_value_ptr_ptr = EG(return_value_ptr_ptr);
zend_op **original_opline_ptr = EG(opline_ptr);
EG(return_value_ptr_ptr) = &local_retval_ptr;
EG(active_op_array) = new_op_array;
EG(no_extensions)=1;
zend_execute(new_op_array TSRMLS_CC);
if (local_retval_ptr) {
if (retval_ptr) {
COPY_PZVAL_TO_ZVAL(*retval_ptr, local_retval_ptr);
} else {
zval_ptr_dtor(&local_retval_ptr);
}
} else {
if (retval_ptr) {
INIT_ZVAL(*retval_ptr);
}
}
EG(no_extensions)=0;
EG(opline_ptr) = original_opline_ptr;
EG(active_op_array) = original_active_op_array;
destroy_op_array(new_op_array TSRMLS_CC);
efree(new_op_array);
EG(return_value_ptr_ptr) = original_return_value_ptr_ptr;
retval = SUCCESS;
} else {
retval = FAILURE;
}
zval_dtor(&pv);
return retval;
}
/* }}} */
ZEND_API int zend_eval_string_ex(char *str, zval *retval_ptr, char *string_name, int handle_exceptions TSRMLS_DC) /* {{{ */
{
int result;
result = zend_eval_string(str, retval_ptr, string_name TSRMLS_CC);
if (handle_exceptions && EG(exception)) {
zend_exception_error(EG(exception) TSRMLS_CC);
result = FAILURE;
}
return result;
}
/* }}} */
void execute_new_code(TSRMLS_D) /* {{{ */
{
zend_op *opline, *end;
zend_op *ret_opline;
zval *local_retval=NULL;
if (!(CG(active_op_array)->fn_flags & ZEND_ACC_INTERACTIVE)
|| CG(active_op_array)->backpatch_count>0
|| CG(active_op_array)->function_name
|| CG(active_op_array)->type!=ZEND_USER_FUNCTION) {
return;
}
ret_opline = get_next_op(CG(active_op_array) TSRMLS_CC);
ret_opline->opcode = ZEND_RETURN;
ret_opline->op1.op_type = IS_CONST;
INIT_ZVAL(ret_opline->op1.u.constant);
SET_UNUSED(ret_opline->op2);
zend_do_handle_exception(TSRMLS_C);
if (!CG(active_op_array)->start_op) {
CG(active_op_array)->start_op = CG(active_op_array)->opcodes;
}
opline=CG(active_op_array)->start_op;
end=CG(active_op_array)->opcodes+CG(active_op_array)->last;
while (opline<end) {
if (opline->op1.op_type == IS_CONST) {
Z_SET_ISREF(opline->op1.u.constant);
Z_SET_REFCOUNT(opline->op1.u.constant, 2); /* Make sure is_ref won't be reset */
}
if (opline->op2.op_type == IS_CONST) {
Z_SET_ISREF(opline->op2.u.constant);
Z_SET_REFCOUNT(opline->op2.u.constant, 2);
}
switch (opline->opcode) {
case ZEND_JMP:
opline->op1.u.jmp_addr = &CG(active_op_array)->opcodes[opline->op1.u.opline_num];
break;
case ZEND_JMPZ:
case ZEND_JMPNZ:
case ZEND_JMPZ_EX:
case ZEND_JMPNZ_EX:
case ZEND_JMP_SET:
opline->op2.u.jmp_addr = &CG(active_op_array)->opcodes[opline->op2.u.opline_num];
break;
}
ZEND_VM_SET_OPCODE_HANDLER(opline);
opline++;
}
EG(return_value_ptr_ptr) = &local_retval;
EG(active_op_array) = CG(active_op_array);
zend_execute(CG(active_op_array) TSRMLS_CC);
if (local_retval) {
zval_ptr_dtor(&local_retval);
}
if (EG(exception)) {
zend_exception_error(EG(exception) TSRMLS_CC);
}
CG(active_op_array)->last -= 2; /* get rid of that ZEND_RETURN and ZEND_HANDLE_EXCEPTION */
CG(active_op_array)->start_op = CG(active_op_array)->opcodes+CG(active_op_array)->last;
}
/* }}} */
ZEND_API void zend_timeout(int dummy) /* {{{ */
{
TSRMLS_FETCH();
if (zend_on_timeout) {
zend_on_timeout(EG(timeout_seconds) TSRMLS_CC);
}
zend_error(E_ERROR, "Maximum execution time of %d second%s exceeded", EG(timeout_seconds), EG(timeout_seconds) == 1 ? "" : "s");
}
/* }}} */
#ifdef ZEND_WIN32
static LRESULT CALLBACK zend_timeout_WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam) /* {{{ */
{
switch (message) {
case WM_DESTROY:
PostQuitMessage(0);
break;
case WM_REGISTER_ZEND_TIMEOUT:
/* wParam is the thread id pointer, lParam is the timeout amount in seconds */
if (lParam == 0) {
KillTimer(timeout_window, wParam);
} else {
#ifdef ZTS
void ***tsrm_ls;
#endif
SetTimer(timeout_window, wParam, lParam*1000, NULL);
#ifdef ZTS
tsrm_ls = ts_resource_ex(0, &wParam);
if (!tsrm_ls) {
/* shouldn't normally happen */
break;
}
#endif
EG(timed_out) = 0;
}
break;
case WM_UNREGISTER_ZEND_TIMEOUT:
/* wParam is the thread id pointer */
KillTimer(timeout_window, wParam);
break;
case WM_TIMER: {
#ifdef ZTS
void ***tsrm_ls;
tsrm_ls = ts_resource_ex(0, &wParam);
if (!tsrm_ls) {
/* Thread died before receiving its timeout? */
break;
}
#endif
KillTimer(timeout_window, wParam);
EG(timed_out) = 1;
}
break;
default:
return DefWindowProc(hWnd, message, wParam, lParam);
}
return 0;
}
/* }}} */
static unsigned __stdcall timeout_thread_proc(void *pArgs) /* {{{ */
{
MSG message;
wc.style=0;
wc.lpfnWndProc = zend_timeout_WndProc;
wc.cbClsExtra=0;
wc.cbWndExtra=0;
wc.hInstance=NULL;
wc.hIcon=NULL;
wc.hCursor=NULL;
wc.hbrBackground=(HBRUSH)(COLOR_BACKGROUND + 5);
wc.lpszMenuName=NULL;
wc.lpszClassName = "Zend Timeout Window";
if (!RegisterClass(&wc)) {
return -1;
}
timeout_window = CreateWindow(wc.lpszClassName, wc.lpszClassName, 0, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, NULL, NULL, NULL, NULL);
SetEvent(timeout_thread_event);
while (GetMessage(&message, NULL, 0, 0)) {
SendMessage(timeout_window, message.message, message.wParam, message.lParam);
if (message.message == WM_QUIT) {
break;
}
}
DestroyWindow(timeout_window);
UnregisterClass(wc.lpszClassName, NULL);
SetEvent(timeout_thread_handle);
return 0;
}
/* }}} */
void zend_init_timeout_thread(void) /* {{{ */
{
timeout_thread_event = CreateEvent(NULL, FALSE, FALSE, NULL);
timeout_thread_handle = CreateEvent(NULL, FALSE, FALSE, NULL);
_beginthreadex(NULL, 0, timeout_thread_proc, NULL, 0, &timeout_thread_id);
WaitForSingleObject(timeout_thread_event, INFINITE);
}
/* }}} */
void zend_shutdown_timeout_thread(void) /* {{{ */
{
if (!timeout_thread_initialized) {
return;
}
PostThreadMessage(timeout_thread_id, WM_QUIT, 0, 0);
/* Wait for thread termination */
WaitForSingleObject(timeout_thread_handle, 5000);
CloseHandle(timeout_thread_handle);
timeout_thread_initialized = 0;
}
/* }}} */
#endif
/* This one doesn't exists on QNX */
#ifndef SIGPROF
#define SIGPROF 27
#endif
void zend_set_timeout(long seconds) /* {{{ */
{
TSRMLS_FETCH();
EG(timeout_seconds) = seconds;
if(!seconds) {
return;
}
#ifdef ZEND_WIN32
if (timeout_thread_initialized == 0 && InterlockedIncrement(&timeout_thread_initialized) == 1) {
/* We start up this process-wide thread here and not in zend_startup(), because if Zend
* is initialized inside a DllMain(), you're not supposed to start threads from it.
*/
zend_init_timeout_thread();
}
PostThreadMessage(timeout_thread_id, WM_REGISTER_ZEND_TIMEOUT, (WPARAM) GetCurrentThreadId(), (LPARAM) seconds);
#else
# ifdef HAVE_SETITIMER
{
struct itimerval t_r; /* timeout requested */
sigset_t sigset;
t_r.it_value.tv_sec = seconds;
t_r.it_value.tv_usec = t_r.it_interval.tv_sec = t_r.it_interval.tv_usec = 0;
# ifdef __CYGWIN__
setitimer(ITIMER_REAL, &t_r, NULL);
signal(SIGALRM, zend_timeout);
sigemptyset(&sigset);
sigaddset(&sigset, SIGALRM);
# else
setitimer(ITIMER_PROF, &t_r, NULL);
signal(SIGPROF, zend_timeout);
sigemptyset(&sigset);
sigaddset(&sigset, SIGPROF);
# endif
sigprocmask(SIG_UNBLOCK, &sigset, NULL);
}
# endif
#endif
}
/* }}} */
void zend_unset_timeout(TSRMLS_D) /* {{{ */
{
#ifdef ZEND_WIN32
if(timeout_thread_initialized) {
PostThreadMessage(timeout_thread_id, WM_UNREGISTER_ZEND_TIMEOUT, (WPARAM) GetCurrentThreadId(), (LPARAM) 0);
}
#else
# ifdef HAVE_SETITIMER
{
struct itimerval no_timeout;
no_timeout.it_value.tv_sec = no_timeout.it_value.tv_usec = no_timeout.it_interval.tv_sec = no_timeout.it_interval.tv_usec = 0;
#ifdef __CYGWIN__
setitimer(ITIMER_REAL, &no_timeout, NULL);
#else
setitimer(ITIMER_PROF, &no_timeout, NULL);
#endif
}
# endif
#endif
}
/* }}} */
zend_class_entry *zend_fetch_class(const char *class_name, uint class_name_len, int fetch_type TSRMLS_DC) /* {{{ */
{
zend_class_entry **pce;
int use_autoload = (fetch_type & ZEND_FETCH_CLASS_NO_AUTOLOAD) == 0;
int rt_ns_check = (fetch_type & ZEND_FETCH_CLASS_RT_NS_CHECK) ? 1 : 0;
int silent = (fetch_type & ZEND_FETCH_CLASS_SILENT) != 0;
fetch_type &= ZEND_FETCH_CLASS_MASK;
check_fetch_type:
switch (fetch_type) {
case ZEND_FETCH_CLASS_SELF:
if (!EG(scope)) {
zend_error(E_ERROR, "Cannot access self:: when no class scope is active");
}
return EG(scope);
case ZEND_FETCH_CLASS_PARENT:
if (!EG(scope)) {
zend_error(E_ERROR, "Cannot access parent:: when no class scope is active");
}
if (!EG(scope)->parent) {
zend_error(E_ERROR, "Cannot access parent:: when current class scope has no parent");
}
return EG(scope)->parent;
case ZEND_FETCH_CLASS_STATIC:
if (!EG(called_scope)) {
zend_error(E_ERROR, "Cannot access static:: when no class scope is active");
}
return EG(called_scope);
case ZEND_FETCH_CLASS_AUTO: {
fetch_type = zend_get_class_fetch_type(class_name, class_name_len);
if (fetch_type!=ZEND_FETCH_CLASS_DEFAULT) {
goto check_fetch_type;
}
}
break;
}
if (zend_lookup_class_ex(class_name, class_name_len, (!rt_ns_check & use_autoload), &pce TSRMLS_CC) == FAILURE) {
if (rt_ns_check) {
/* Check if we have internal class with the same name */
char *php_name;
uint php_name_len;
php_name = zend_memrchr(class_name, ':', class_name_len);
if (php_name) {
php_name++;
php_name_len = class_name_len - (php_name - class_name);
php_name = zend_str_tolower_dup(php_name, php_name_len);
if (zend_hash_find(EG(class_table), php_name, php_name_len + 1, (void **) &pce) == SUCCESS &&
(*pce)->type == ZEND_INTERNAL_CLASS
) {
efree(php_name);
return *pce;
}
efree(php_name);
}
}
if (use_autoload) {
if (rt_ns_check && zend_lookup_class_ex(class_name, class_name_len, 1, &pce TSRMLS_CC) == SUCCESS) {
return *pce;
}
if (!silent) {
if (fetch_type == ZEND_FETCH_CLASS_INTERFACE) {
zend_error(E_ERROR, "Interface '%s' not found", class_name);
} else {
zend_error(E_ERROR, "Class '%s' not found", class_name);
}
}
}
return NULL;
}
return *pce;
}
/* }}} */
#define MAX_ABSTRACT_INFO_CNT 3
#define MAX_ABSTRACT_INFO_FMT "%s%s%s%s"
#define DISPLAY_ABSTRACT_FN(idx) \
ai.afn[idx] ? ZEND_FN_SCOPE_NAME(ai.afn[idx]) : "", \
ai.afn[idx] ? "::" : "", \
ai.afn[idx] ? ai.afn[idx]->common.function_name : "", \
ai.afn[idx] && ai.afn[idx + 1] ? ", " : (ai.afn[idx] && ai.cnt > MAX_ABSTRACT_INFO_CNT ? ", ..." : "")
typedef struct _zend_abstract_info {
zend_function *afn[MAX_ABSTRACT_INFO_CNT + 1];
int cnt;
} zend_abstract_info;
static int zend_verify_abstract_class_function(zend_function *fn, zend_abstract_info *ai TSRMLS_DC) /* {{{ */
{
if (fn->common.fn_flags & ZEND_ACC_ABSTRACT) {
if (ai->cnt < MAX_ABSTRACT_INFO_CNT) {
ai->afn[ai->cnt] = fn;
}
ai->cnt++;
}
return 0;
}
/* }}} */
void zend_verify_abstract_class(zend_class_entry *ce TSRMLS_DC) /* {{{ */
{
zend_abstract_info ai;
if ((ce->ce_flags & ZEND_ACC_IMPLICIT_ABSTRACT_CLASS) && !(ce->ce_flags & ZEND_ACC_EXPLICIT_ABSTRACT_CLASS)) {
memset(&ai, 0, sizeof(ai));
zend_hash_apply_with_argument(&ce->function_table, (apply_func_arg_t) zend_verify_abstract_class_function, &ai TSRMLS_CC);
if (ai.cnt) {
zend_error(E_ERROR, "Class %s contains %d abstract method%s and must therefore be declared abstract or implement the remaining methods (" MAX_ABSTRACT_INFO_FMT MAX_ABSTRACT_INFO_FMT MAX_ABSTRACT_INFO_FMT ")",
ce->name, ai.cnt,
ai.cnt > 1 ? "s" : "",
DISPLAY_ABSTRACT_FN(0),
DISPLAY_ABSTRACT_FN(1),
DISPLAY_ABSTRACT_FN(2)
);
}
}
}
/* }}} */
ZEND_API void zend_reset_all_cv(HashTable *symbol_table TSRMLS_DC) /* {{{ */
{
zend_execute_data *ex;
int i;
for (ex = EG(current_execute_data); ex; ex = ex->prev_execute_data) {
if (ex->op_array && ex->symbol_table == symbol_table) {
for (i = 0; i < ex->op_array->last_var; i++) {
ex->CVs[i] = NULL;
}
}
}
}
/* }}} */
ZEND_API int zend_delete_global_variable(char *name, int name_len TSRMLS_DC) /* {{{ */
{
zend_execute_data *ex;
ulong hash_value = zend_inline_hash_func(name, name_len + 1);
if (zend_hash_quick_exists(&EG(symbol_table), name, name_len + 1, hash_value)) {
for (ex = EG(current_execute_data); ex; ex = ex->prev_execute_data) {
if (ex->op_array && ex->symbol_table == &EG(symbol_table)) {
int i;
for (i = 0; i < ex->op_array->last_var; i++) {
if (ex->op_array->vars[i].hash_value == hash_value &&
ex->op_array->vars[i].name_len == name_len &&
!memcmp(ex->op_array->vars[i].name, name, name_len)
) {
ex->CVs[i] = NULL;
break;
}
}
}
}
return zend_hash_del(&EG(symbol_table), name, name_len + 1);
}
return FAILURE;
}
/* }}} */
/*
* Local variables:
* tab-width: 4
* c-basic-offset: 4
* indent-tabs-mode: t
* End:
*/
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