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php-src/Zend/zend.c

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/*
+----------------------------------------------------------------------+
| Zend Engine |
+----------------------------------------------------------------------+
| Copyright (c) Zend Technologies Ltd. (http://www.zend.com) |
+----------------------------------------------------------------------+
| This source file is subject to version 2.00 of the Zend license, |
| that is bundled with this package in the file LICENSE, and is |
| available through the world-wide-web at the following url: |
| http://www.zend.com/license/2_00.txt. |
| If you did not receive a copy of the Zend license and are unable to |
| obtain it through the world-wide-web, please send a note to |
| license@zend.com so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Authors: Andi Gutmans <andi@php.net> |
| Zeev Suraski <zeev@php.net> |
+----------------------------------------------------------------------+
*/
#include "zend.h"
#include "zend_extensions.h"
#include "zend_modules.h"
#include "zend_constants.h"
#include "zend_list.h"
#include "zend_API.h"
#include "zend_exceptions.h"
#include "zend_builtin_functions.h"
#include "zend_ini.h"
#include "zend_vm.h"
#include "zend_dtrace.h"
#include "zend_virtual_cwd.h"
#include "zend_smart_str.h"
#include "zend_smart_string.h"
#include "zend_cpuinfo.h"
#include "zend_attributes.h"
#include "zend_observer.h"
#include "zend_fibers.h"
#include "zend_max_execution_timer.h"
#include "Optimizer/zend_optimizer.h"
static size_t global_map_ptr_last = 0;
static bool startup_done = false;
#ifdef ZTS
ZEND_API int compiler_globals_id;
ZEND_API int executor_globals_id;
ZEND_API size_t compiler_globals_offset;
ZEND_API size_t executor_globals_offset;
static HashTable *global_function_table = NULL;
static HashTable *global_class_table = NULL;
static HashTable *global_constants_table = NULL;
static HashTable *global_auto_globals_table = NULL;
static HashTable *global_persistent_list = NULL;
TSRMLS_MAIN_CACHE_DEFINE()
# define GLOBAL_FUNCTION_TABLE global_function_table
# define GLOBAL_CLASS_TABLE global_class_table
# define GLOBAL_CONSTANTS_TABLE global_constants_table
# define GLOBAL_AUTO_GLOBALS_TABLE global_auto_globals_table
#else
# define GLOBAL_FUNCTION_TABLE CG(function_table)
# define GLOBAL_CLASS_TABLE CG(class_table)
# define GLOBAL_AUTO_GLOBALS_TABLE CG(auto_globals)
# define GLOBAL_CONSTANTS_TABLE EG(zend_constants)
#endif
ZEND_API zend_utility_values zend_uv;
ZEND_API bool zend_dtrace_enabled;
/* version information */
static char *zend_version_info;
static uint32_t zend_version_info_length;
#define ZEND_CORE_VERSION_INFO "Zend Engine v" ZEND_VERSION ", Copyright (c) Zend Technologies\n"
#define PRINT_ZVAL_INDENT 4
/* true multithread-shared globals */
ZEND_API zend_class_entry *zend_standard_class_def = NULL;
ZEND_API size_t (*zend_printf)(const char *format, ...);
ZEND_API zend_write_func_t zend_write;
ZEND_API FILE *(*zend_fopen)(zend_string *filename, zend_string **opened_path);
ZEND_API zend_result (*zend_stream_open_function)(zend_file_handle *handle);
ZEND_API void (*zend_ticks_function)(int ticks);
ZEND_API void (*zend_interrupt_function)(zend_execute_data *execute_data);
ZEND_API void (*zend_error_cb)(int type, zend_string *error_filename, const uint32_t error_lineno, zend_string *message);
void (*zend_printf_to_smart_string)(smart_string *buf, const char *format, va_list ap);
void (*zend_printf_to_smart_str)(smart_str *buf, const char *format, va_list ap);
ZEND_API char *(*zend_getenv)(const char *name, size_t name_len);
ZEND_API zend_string *(*zend_resolve_path)(zend_string *filename);
ZEND_API zend_result (*zend_post_startup_cb)(void) = NULL;
ZEND_API void (*zend_post_shutdown_cb)(void) = NULL;
/* This callback must be signal handler safe! */
void (*zend_on_timeout)(int seconds);
static void (*zend_message_dispatcher_p)(zend_long message, const void *data);
static zval *(*zend_get_configuration_directive_p)(zend_string *name);
#if ZEND_RC_DEBUG
ZEND_API bool zend_rc_debug = 0;
#endif
static ZEND_INI_MH(OnUpdateErrorReporting) /* {{{ */
{
if (!new_value) {
EG(error_reporting) = E_ALL;
} else {
EG(error_reporting) = atoi(ZSTR_VAL(new_value));
}
return SUCCESS;
}
/* }}} */
static ZEND_INI_MH(OnUpdateGCEnabled) /* {{{ */
{
bool val;
val = zend_ini_parse_bool(new_value);
gc_enable(val);
return SUCCESS;
}
/* }}} */
static ZEND_INI_DISP(zend_gc_enabled_displayer_cb) /* {{{ */
{
if (gc_enabled()) {
ZEND_PUTS("On");
} else {
ZEND_PUTS("Off");
}
}
/* }}} */
static ZEND_INI_MH(OnUpdateScriptEncoding) /* {{{ */
{
if (!CG(multibyte)) {
return FAILURE;
}
if (!zend_multibyte_get_functions()) {
return SUCCESS;
}
return zend_multibyte_set_script_encoding_by_string(new_value ? ZSTR_VAL(new_value) : NULL, new_value ? ZSTR_LEN(new_value) : 0);
}
/* }}} */
static ZEND_INI_MH(OnUpdateAssertions) /* {{{ */
{
zend_long *p = (zend_long *) ZEND_INI_GET_ADDR();
zend_long val = zend_atol(ZSTR_VAL(new_value), ZSTR_LEN(new_value));
if (stage != ZEND_INI_STAGE_STARTUP &&
stage != ZEND_INI_STAGE_SHUTDOWN &&
*p != val &&
(*p < 0 || val < 0)) {
zend_error(E_WARNING, "zend.assertions may be completely enabled or disabled only in php.ini");
return FAILURE;
}
*p = val;
return SUCCESS;
}
/* }}} */
static ZEND_INI_MH(OnSetExceptionStringParamMaxLen) /* {{{ */
{
zend_long i = ZEND_ATOL(ZSTR_VAL(new_value));
if (i >= 0 && i <= 1000000) {
EG(exception_string_param_max_len) = i;
return SUCCESS;
} else {
return FAILURE;
}
}
/* }}} */
static ZEND_INI_MH(OnUpdateFiberStackSize) /* {{{ */
{
if (new_value) {
zend_long tmp = zend_atol(ZSTR_VAL(new_value), ZSTR_LEN(new_value));
if (tmp < 0) {
zend_error(E_WARNING, "fiber.stack_size must be a positive number");
return FAILURE;
}
EG(fiber_stack_size) = tmp;
} else {
EG(fiber_stack_size) = ZEND_FIBER_DEFAULT_C_STACK_SIZE;
}
return SUCCESS;
}
/* }}} */
#if ZEND_DEBUG
# define SIGNAL_CHECK_DEFAULT "1"
#else
# define SIGNAL_CHECK_DEFAULT "0"
#endif
ZEND_INI_BEGIN()
ZEND_INI_ENTRY("error_reporting", NULL, ZEND_INI_ALL, OnUpdateErrorReporting)
STD_ZEND_INI_ENTRY("zend.assertions", "1", ZEND_INI_ALL, OnUpdateAssertions, assertions, zend_executor_globals, executor_globals)
ZEND_INI_ENTRY3_EX("zend.enable_gc", "1", ZEND_INI_ALL, OnUpdateGCEnabled, NULL, NULL, NULL, zend_gc_enabled_displayer_cb)
STD_ZEND_INI_BOOLEAN("zend.multibyte", "0", ZEND_INI_PERDIR, OnUpdateBool, multibyte, zend_compiler_globals, compiler_globals)
ZEND_INI_ENTRY("zend.script_encoding", NULL, ZEND_INI_ALL, OnUpdateScriptEncoding)
STD_ZEND_INI_BOOLEAN("zend.detect_unicode", "1", ZEND_INI_ALL, OnUpdateBool, detect_unicode, zend_compiler_globals, compiler_globals)
#ifdef ZEND_SIGNALS
STD_ZEND_INI_BOOLEAN("zend.signal_check", SIGNAL_CHECK_DEFAULT, ZEND_INI_SYSTEM, OnUpdateBool, check, zend_signal_globals_t, zend_signal_globals)
#endif
STD_ZEND_INI_BOOLEAN("zend.exception_ignore_args", "0", ZEND_INI_ALL, OnUpdateBool, exception_ignore_args, zend_executor_globals, executor_globals)
STD_ZEND_INI_ENTRY("zend.exception_string_param_max_len", "15", ZEND_INI_ALL, OnSetExceptionStringParamMaxLen, exception_string_param_max_len, zend_executor_globals, executor_globals)
STD_ZEND_INI_ENTRY("fiber.stack_size", NULL, ZEND_INI_ALL, OnUpdateFiberStackSize, fiber_stack_size, zend_executor_globals, executor_globals)
ZEND_INI_END()
ZEND_API size_t zend_vspprintf(char **pbuf, size_t max_len, const char *format, va_list ap) /* {{{ */
{
smart_string buf = {0};
/* since there are places where (v)spprintf called without checking for null,
a bit of defensive coding here */
if (!pbuf) {
return 0;
}
zend_printf_to_smart_string(&buf, format, ap);
if (max_len && buf.len > max_len) {
buf.len = max_len;
}
smart_string_0(&buf);
if (buf.c) {
*pbuf = buf.c;
return buf.len;
} else {
*pbuf = estrndup("", 0);
return 0;
}
}
/* }}} */
ZEND_API size_t zend_spprintf(char **message, size_t max_len, const char *format, ...) /* {{{ */
{
va_list arg;
size_t len;
va_start(arg, format);
len = zend_vspprintf(message, max_len, format, arg);
va_end(arg);
return len;
}
/* }}} */
ZEND_API size_t zend_spprintf_unchecked(char **message, size_t max_len, const char *format, ...) /* {{{ */
{
va_list arg;
size_t len;
va_start(arg, format);
len = zend_vspprintf(message, max_len, format, arg);
va_end(arg);
return len;
}
/* }}} */
ZEND_API zend_string *zend_vstrpprintf(size_t max_len, const char *format, va_list ap) /* {{{ */
{
smart_str buf = {0};
zend_printf_to_smart_str(&buf, format, ap);
if (!buf.s) {
return ZSTR_EMPTY_ALLOC();
}
if (max_len && ZSTR_LEN(buf.s) > max_len) {
ZSTR_LEN(buf.s) = max_len;
}
smart_str_0(&buf);
return buf.s;
}
/* }}} */
ZEND_API zend_string *zend_strpprintf(size_t max_len, const char *format, ...) /* {{{ */
{
va_list arg;
zend_string *str;
va_start(arg, format);
str = zend_vstrpprintf(max_len, format, arg);
va_end(arg);
return str;
}
/* }}} */
ZEND_API zend_string *zend_strpprintf_unchecked(size_t max_len, const char *format, ...) /* {{{ */
{
va_list arg;
zend_string *str;
va_start(arg, format);
str = zend_vstrpprintf(max_len, format, arg);
va_end(arg);
return str;
}
/* }}} */
static void zend_print_zval_r_to_buf(smart_str *buf, zval *expr, int indent);
static void print_hash(smart_str *buf, HashTable *ht, int indent, bool is_object) /* {{{ */
{
zval *tmp;
zend_string *string_key;
zend_ulong num_key;
int i;
for (i = 0; i < indent; i++) {
smart_str_appendc(buf, ' ');
}
smart_str_appends(buf, "(\n");
indent += PRINT_ZVAL_INDENT;
ZEND_HASH_FOREACH_KEY_VAL_IND(ht, num_key, string_key, tmp) {
for (i = 0; i < indent; i++) {
smart_str_appendc(buf, ' ');
}
smart_str_appendc(buf, '[');
if (string_key) {
if (is_object) {
const char *prop_name, *class_name;
size_t prop_len;
int mangled = zend_unmangle_property_name_ex(string_key, &class_name, &prop_name, &prop_len);
smart_str_appendl(buf, prop_name, prop_len);
if (class_name && mangled == SUCCESS) {
if (class_name[0] == '*') {
smart_str_appends(buf, ":protected");
} else {
smart_str_appends(buf, ":");
smart_str_appends(buf, class_name);
smart_str_appends(buf, ":private");
}
}
} else {
smart_str_append(buf, string_key);
}
} else {
smart_str_append_long(buf, num_key);
}
smart_str_appends(buf, "] => ");
zend_print_zval_r_to_buf(buf, tmp, indent+PRINT_ZVAL_INDENT);
smart_str_appends(buf, "\n");
} ZEND_HASH_FOREACH_END();
indent -= PRINT_ZVAL_INDENT;
for (i = 0; i < indent; i++) {
smart_str_appendc(buf, ' ');
}
smart_str_appends(buf, ")\n");
}
/* }}} */
static void print_flat_hash(smart_str *buf, HashTable *ht) /* {{{ */
{
zval *tmp;
zend_string *string_key;
zend_ulong num_key;
int i = 0;
ZEND_HASH_FOREACH_KEY_VAL_IND(ht, num_key, string_key, tmp) {
if (i++ > 0) {
smart_str_appendc(buf, ',');
}
smart_str_appendc(buf, '[');
if (string_key) {
smart_str_append(buf, string_key);
} else {
smart_str_append_unsigned(buf, num_key);
}
smart_str_appends(buf, "] => ");
zend_print_flat_zval_r_to_buf(buf, tmp);
} ZEND_HASH_FOREACH_END();
}
/* }}} */
ZEND_API bool zend_make_printable_zval(zval *expr, zval *expr_copy) /* {{{ */
{
if (Z_TYPE_P(expr) == IS_STRING) {
return 0;
} else {
ZVAL_STR(expr_copy, zval_get_string_func(expr));
return 1;
}
}
/* }}} */
ZEND_API size_t zend_print_zval(zval *expr, int indent) /* {{{ */
{
zend_string *tmp_str;
zend_string *str = zval_get_tmp_string(expr, &tmp_str);
size_t len = ZSTR_LEN(str);
if (len != 0) {
zend_write(ZSTR_VAL(str), len);
}
zend_tmp_string_release(tmp_str);
return len;
}
/* }}} */
void zend_print_flat_zval_r_to_buf(smart_str *buf, zval *expr) /* {{{ */
{
switch (Z_TYPE_P(expr)) {
case IS_ARRAY:
smart_str_appends(buf, "Array (");
if (!(GC_FLAGS(Z_ARRVAL_P(expr)) & GC_IMMUTABLE)) {
if (GC_IS_RECURSIVE(Z_ARRVAL_P(expr))) {
smart_str_appends(buf, " *RECURSION*");
return;
}
GC_PROTECT_RECURSION(Z_ARRVAL_P(expr));
}
print_flat_hash(buf, Z_ARRVAL_P(expr));
smart_str_appendc(buf, ')');
GC_TRY_UNPROTECT_RECURSION(Z_ARRVAL_P(expr));
break;
case IS_OBJECT:
{
HashTable *properties;
zend_string *class_name = Z_OBJ_HANDLER_P(expr, get_class_name)(Z_OBJ_P(expr));
smart_str_append(buf, class_name);
smart_str_appends(buf, " Object (");
zend_string_release_ex(class_name, 0);
if (GC_IS_RECURSIVE(Z_COUNTED_P(expr))) {
smart_str_appends(buf, " *RECURSION*");
return;
}
properties = Z_OBJPROP_P(expr);
if (properties) {
GC_PROTECT_RECURSION(Z_OBJ_P(expr));
print_flat_hash(buf, properties);
GC_UNPROTECT_RECURSION(Z_OBJ_P(expr));
}
smart_str_appendc(buf, ')');
break;
}
case IS_REFERENCE:
zend_print_flat_zval_r_to_buf(buf, Z_REFVAL_P(expr));
break;
case IS_STRING:
smart_str_append(buf, Z_STR_P(expr));
break;
default:
{
zend_string *str = zval_get_string_func(expr);
smart_str_append(buf, str);
zend_string_release_ex(str, 0);
break;
}
}
}
/* }}} */
ZEND_API void zend_print_flat_zval_r(zval *expr)
{
smart_str buf = {0};
zend_print_flat_zval_r_to_buf(&buf, expr);
smart_str_0(&buf);
zend_write(ZSTR_VAL(buf.s), ZSTR_LEN(buf.s));
smart_str_free(&buf);
}
static void zend_print_zval_r_to_buf(smart_str *buf, zval *expr, int indent) /* {{{ */
{
switch (Z_TYPE_P(expr)) {
case IS_ARRAY:
smart_str_appends(buf, "Array\n");
if (!(GC_FLAGS(Z_ARRVAL_P(expr)) & GC_IMMUTABLE)) {
if (GC_IS_RECURSIVE(Z_ARRVAL_P(expr))) {
smart_str_appends(buf, " *RECURSION*");
return;
}
GC_PROTECT_RECURSION(Z_ARRVAL_P(expr));
}
print_hash(buf, Z_ARRVAL_P(expr), indent, 0);
GC_TRY_UNPROTECT_RECURSION(Z_ARRVAL_P(expr));
break;
case IS_OBJECT:
{
HashTable *properties;
zend_object *zobj = Z_OBJ_P(expr);
zend_string *class_name = Z_OBJ_HANDLER_P(expr, get_class_name)(zobj);
smart_str_appends(buf, ZSTR_VAL(class_name));
zend_string_release_ex(class_name, 0);
if (!(zobj->ce->ce_flags & ZEND_ACC_ENUM)) {
smart_str_appends(buf, " Object\n");
} else {
smart_str_appends(buf, " Enum");
if (zobj->ce->enum_backing_type != IS_UNDEF) {
smart_str_appendc(buf, ':');
smart_str_appends(buf, zend_get_type_by_const(zobj->ce->enum_backing_type));
}
smart_str_appendc(buf, '\n');
}
if (GC_IS_RECURSIVE(Z_OBJ_P(expr))) {
smart_str_appends(buf, " *RECURSION*");
return;
}
if ((properties = zend_get_properties_for(expr, ZEND_PROP_PURPOSE_DEBUG)) == NULL) {
break;
}
GC_PROTECT_RECURSION(Z_OBJ_P(expr));
print_hash(buf, properties, indent, 1);
GC_UNPROTECT_RECURSION(Z_OBJ_P(expr));
zend_release_properties(properties);
break;
}
case IS_LONG:
smart_str_append_long(buf, Z_LVAL_P(expr));
break;
case IS_REFERENCE:
zend_print_zval_r_to_buf(buf, Z_REFVAL_P(expr), indent);
break;
case IS_STRING:
smart_str_append(buf, Z_STR_P(expr));
break;
default:
{
zend_string *str = zval_get_string_func(expr);
smart_str_append(buf, str);
zend_string_release_ex(str, 0);
}
break;
}
}
/* }}} */
ZEND_API zend_string *zend_print_zval_r_to_str(zval *expr, int indent) /* {{{ */
{
smart_str buf = {0};
zend_print_zval_r_to_buf(&buf, expr, indent);
smart_str_0(&buf);
return buf.s;
}
/* }}} */
ZEND_API void zend_print_zval_r(zval *expr, int indent) /* {{{ */
{
zend_string *str = zend_print_zval_r_to_str(expr, indent);
zend_write(ZSTR_VAL(str), ZSTR_LEN(str));
zend_string_release_ex(str, 0);
}
/* }}} */
static FILE *zend_fopen_wrapper(zend_string *filename, zend_string **opened_path) /* {{{ */
{
if (opened_path) {
*opened_path = zend_string_copy(filename);
}
return fopen(ZSTR_VAL(filename), "rb");
}
/* }}} */
#ifdef ZTS
static bool short_tags_default = 1;
static uint32_t compiler_options_default = ZEND_COMPILE_DEFAULT;
#else
# define short_tags_default 1
# define compiler_options_default ZEND_COMPILE_DEFAULT
#endif
static void zend_set_default_compile_time_values(void) /* {{{ */
{
/* default compile-time values */
CG(short_tags) = short_tags_default;
CG(compiler_options) = compiler_options_default;
CG(rtd_key_counter) = 0;
}
/* }}} */
#ifdef ZEND_WIN32
static void zend_get_windows_version_info(OSVERSIONINFOEX *osvi) /* {{{ */
{
ZeroMemory(osvi, sizeof(OSVERSIONINFOEX));
osvi->dwOSVersionInfoSize = sizeof(OSVERSIONINFOEX);
if(!GetVersionEx((OSVERSIONINFO *) osvi)) {
ZEND_UNREACHABLE(); /* Should not happen as sizeof is used. */
}
}
/* }}} */
#endif
static void zend_init_exception_op(void) /* {{{ */
{
memset(EG(exception_op), 0, sizeof(EG(exception_op)));
EG(exception_op)[0].opcode = ZEND_HANDLE_EXCEPTION;
ZEND_VM_SET_OPCODE_HANDLER(EG(exception_op));
EG(exception_op)[1].opcode = ZEND_HANDLE_EXCEPTION;
ZEND_VM_SET_OPCODE_HANDLER(EG(exception_op)+1);
EG(exception_op)[2].opcode = ZEND_HANDLE_EXCEPTION;
ZEND_VM_SET_OPCODE_HANDLER(EG(exception_op)+2);
}
/* }}} */
static void zend_init_call_trampoline_op(void) /* {{{ */
{
memset(&EG(call_trampoline_op), 0, sizeof(EG(call_trampoline_op)));
EG(call_trampoline_op).opcode = ZEND_CALL_TRAMPOLINE;
ZEND_VM_SET_OPCODE_HANDLER(&EG(call_trampoline_op));
}
/* }}} */
static void auto_global_dtor(zval *zv) /* {{{ */
{
free(Z_PTR_P(zv));
}
/* }}} */
#ifdef ZTS
static void function_copy_ctor(zval *zv) /* {{{ */
{
zend_function *old_func = Z_FUNC_P(zv);
zend_function *func;
if (old_func->type == ZEND_USER_FUNCTION) {
ZEND_ASSERT(old_func->op_array.fn_flags & ZEND_ACC_IMMUTABLE);
return;
}
func = pemalloc(sizeof(zend_internal_function), 1);
Z_FUNC_P(zv) = func;
memcpy(func, old_func, sizeof(zend_internal_function));
function_add_ref(func);
if ((old_func->common.fn_flags & (ZEND_ACC_HAS_RETURN_TYPE|ZEND_ACC_HAS_TYPE_HINTS))
&& old_func->common.arg_info) {
uint32_t i;
uint32_t num_args = old_func->common.num_args + 1;
zend_arg_info *arg_info = old_func->common.arg_info - 1;
zend_arg_info *new_arg_info;
if (old_func->common.fn_flags & ZEND_ACC_VARIADIC) {
num_args++;
}
new_arg_info = pemalloc(sizeof(zend_arg_info) * num_args, 1);
memcpy(new_arg_info, arg_info, sizeof(zend_arg_info) * num_args);
for (i = 0 ; i < num_args; i++) {
if (ZEND_TYPE_HAS_LIST(arg_info[i].type)) {
zend_type_list *old_list = ZEND_TYPE_LIST(arg_info[i].type);
zend_type_list *new_list = pemalloc(ZEND_TYPE_LIST_SIZE(old_list->num_types), 1);
memcpy(new_list, old_list, ZEND_TYPE_LIST_SIZE(old_list->num_types));
ZEND_TYPE_SET_PTR(new_arg_info[i].type, new_list);
zend_type *list_type;
ZEND_TYPE_LIST_FOREACH(new_list, list_type) {
zend_string *name = zend_string_dup(ZEND_TYPE_NAME(*list_type), 1);
ZEND_TYPE_SET_PTR(*list_type, name);
} ZEND_TYPE_LIST_FOREACH_END();
} else if (ZEND_TYPE_HAS_NAME(arg_info[i].type)) {
zend_string *name = zend_string_dup(ZEND_TYPE_NAME(arg_info[i].type), 1);
ZEND_TYPE_SET_PTR(new_arg_info[i].type, name);
}
}
func->common.arg_info = new_arg_info + 1;
}
if (old_func->common.attributes) {
zend_attribute *old_attr;
func->common.attributes = NULL;
ZEND_HASH_FOREACH_PTR(old_func->common.attributes, old_attr) {
uint32_t i;
zend_attribute *attr;
attr = zend_add_attribute(&func->common.attributes, old_attr->name, old_attr->argc, old_attr->flags, old_attr->offset, old_attr->lineno);
for (i = 0 ; i < old_attr->argc; i++) {
ZVAL_DUP(&attr->args[i].value, &old_attr->args[i].value);
}
} ZEND_HASH_FOREACH_END();
}
}
/* }}} */
static void auto_global_copy_ctor(zval *zv) /* {{{ */
{
zend_auto_global *old_ag = (zend_auto_global *) Z_PTR_P(zv);
zend_auto_global *new_ag = pemalloc(sizeof(zend_auto_global), 1);
new_ag->name = old_ag->name;
new_ag->auto_global_callback = old_ag->auto_global_callback;
new_ag->jit = old_ag->jit;
Z_PTR_P(zv) = new_ag;
}
/* }}} */
static void compiler_globals_ctor(zend_compiler_globals *compiler_globals) /* {{{ */
{
compiler_globals->compiled_filename = NULL;
compiler_globals->function_table = (HashTable *) malloc(sizeof(HashTable));
zend_hash_init(compiler_globals->function_table, 1024, NULL, ZEND_FUNCTION_DTOR, 1);
zend_hash_copy(compiler_globals->function_table, global_function_table, function_copy_ctor);
compiler_globals->class_table = (HashTable *) malloc(sizeof(HashTable));
zend_hash_init(compiler_globals->class_table, 64, NULL, ZEND_CLASS_DTOR, 1);
zend_hash_copy(compiler_globals->class_table, global_class_table, zend_class_add_ref);
zend_set_default_compile_time_values();
compiler_globals->auto_globals = (HashTable *) malloc(sizeof(HashTable));
zend_hash_init(compiler_globals->auto_globals, 8, NULL, auto_global_dtor, 1);
zend_hash_copy(compiler_globals->auto_globals, global_auto_globals_table, auto_global_copy_ctor);
compiler_globals->script_encoding_list = NULL;
compiler_globals->current_linking_class = NULL;
#if ZEND_MAP_PTR_KIND == ZEND_MAP_PTR_KIND_PTR_OR_OFFSET
/* Map region is going to be created and resized at run-time. */
compiler_globals->map_ptr_real_base = NULL;
compiler_globals->map_ptr_base = ZEND_MAP_PTR_BIASED_BASE(NULL);
compiler_globals->map_ptr_size = 0;
compiler_globals->map_ptr_last = global_map_ptr_last;
if (compiler_globals->map_ptr_last) {
/* Allocate map_ptr table */
compiler_globals->map_ptr_size = ZEND_MM_ALIGNED_SIZE_EX(compiler_globals->map_ptr_last, 4096);
void *base = pemalloc(compiler_globals->map_ptr_size * sizeof(void*), 1);
compiler_globals->map_ptr_real_base = base;
compiler_globals->map_ptr_base = ZEND_MAP_PTR_BIASED_BASE(base);
memset(base, 0, compiler_globals->map_ptr_last * sizeof(void*));
}
#else
# error "Unknown ZEND_MAP_PTR_KIND"
#endif
}
/* }}} */
static void compiler_globals_dtor(zend_compiler_globals *compiler_globals) /* {{{ */
{
if (compiler_globals->function_table != GLOBAL_FUNCTION_TABLE) {
zend_hash_destroy(compiler_globals->function_table);
free(compiler_globals->function_table);
}
if (compiler_globals->class_table != GLOBAL_CLASS_TABLE) {
/* Child classes may reuse structures from parent classes, so destroy in reverse order. */
zend_hash_graceful_reverse_destroy(compiler_globals->class_table);
free(compiler_globals->class_table);
}
if (compiler_globals->auto_globals != GLOBAL_AUTO_GLOBALS_TABLE) {
zend_hash_destroy(compiler_globals->auto_globals);
free(compiler_globals->auto_globals);
}
if (compiler_globals->script_encoding_list) {
pefree((char*)compiler_globals->script_encoding_list, 1);
}
if (compiler_globals->map_ptr_real_base) {
free(compiler_globals->map_ptr_real_base);
compiler_globals->map_ptr_real_base = NULL;
compiler_globals->map_ptr_base = ZEND_MAP_PTR_BIASED_BASE(NULL);
compiler_globals->map_ptr_size = 0;
}
}
/* }}} */
static void executor_globals_ctor(zend_executor_globals *executor_globals) /* {{{ */
{
zend_startup_constants();
zend_copy_constants(executor_globals->zend_constants, GLOBAL_CONSTANTS_TABLE);
zend_init_rsrc_plist();
zend_init_exception_op();
zend_init_call_trampoline_op();
memset(&executor_globals->trampoline, 0, sizeof(zend_op_array));
executor_globals->capture_warnings_during_sccp = 0;
ZVAL_UNDEF(&executor_globals->user_error_handler);
ZVAL_UNDEF(&executor_globals->user_exception_handler);
executor_globals->in_autoload = NULL;
executor_globals->current_execute_data = NULL;
executor_globals->current_module = NULL;
executor_globals->exit_status = 0;
#if XPFPA_HAVE_CW
executor_globals->saved_fpu_cw = 0;
#endif
executor_globals->saved_fpu_cw_ptr = NULL;
executor_globals->active = 0;
executor_globals->bailout = NULL;
executor_globals->error_handling = EH_NORMAL;
executor_globals->exception_class = NULL;
executor_globals->exception = NULL;
executor_globals->objects_store.object_buckets = NULL;
executor_globals->current_fiber_context = NULL;
executor_globals->main_fiber_context = NULL;
executor_globals->active_fiber = NULL;
#ifdef ZEND_WIN32
zend_get_windows_version_info(&executor_globals->windows_version_info);
#endif
executor_globals->flags = EG_FLAGS_INITIAL;
executor_globals->record_errors = false;
executor_globals->num_errors = 0;
executor_globals->errors = NULL;
#ifdef ZEND_MAX_EXECUTION_TIMERS
executor_globals->pid = 0;
executor_globals->oldact = (struct sigaction){0};
#endif
}
/* }}} */
static void executor_globals_dtor(zend_executor_globals *executor_globals) /* {{{ */
{
zend_ini_dtor(executor_globals->ini_directives);
if (&executor_globals->persistent_list != global_persistent_list) {
zend_destroy_rsrc_list(&executor_globals->persistent_list);
}
if (executor_globals->zend_constants != GLOBAL_CONSTANTS_TABLE) {
zend_hash_destroy(executor_globals->zend_constants);
free(executor_globals->zend_constants);
}
}
/* }}} */
static void zend_new_thread_end_handler(THREAD_T thread_id) /* {{{ */
{
zend_copy_ini_directives();
zend_ini_refresh_caches(ZEND_INI_STAGE_STARTUP);
zend_max_execution_timer_init();
}
/* }}} */
#endif
#if defined(__FreeBSD__) || defined(__DragonFly__)
/* FreeBSD and DragonFly floating point precision fix */
#include <floatingpoint.h>
#endif
static void ini_scanner_globals_ctor(zend_ini_scanner_globals *scanner_globals_p) /* {{{ */
{
memset(scanner_globals_p, 0, sizeof(*scanner_globals_p));
}
/* }}} */
static void php_scanner_globals_ctor(zend_php_scanner_globals *scanner_globals_p) /* {{{ */
{
memset(scanner_globals_p, 0, sizeof(*scanner_globals_p));
}
/* }}} */
static void module_destructor_zval(zval *zv) /* {{{ */
{
zend_module_entry *module = (zend_module_entry*)Z_PTR_P(zv);
module_destructor(module);
free(module);
}
/* }}} */
static bool php_auto_globals_create_globals(zend_string *name) /* {{{ */
{
/* While we keep registering $GLOBALS as an auto-global, we do not create an
* actual variable for it. Access to it handled specially by the compiler. */
return 0;
}
/* }}} */
void zend_startup(zend_utility_functions *utility_functions) /* {{{ */
{
#ifdef ZTS
zend_compiler_globals *compiler_globals;
zend_executor_globals *executor_globals;
extern ZEND_API ts_rsrc_id ini_scanner_globals_id;
extern ZEND_API ts_rsrc_id language_scanner_globals_id;
#else
extern zend_ini_scanner_globals ini_scanner_globals;
extern zend_php_scanner_globals language_scanner_globals;
#endif
zend_cpu_startup();
#ifdef ZEND_WIN32
php_win32_cp_set_by_id(65001);
#endif
start_memory_manager();
virtual_cwd_startup(); /* Could use shutdown to free the main cwd but it would just slow it down for CGI */
#if defined(__FreeBSD__) || defined(__DragonFly__)
/* FreeBSD and DragonFly floating point precision fix */
fpsetmask(0);
#endif
zend_startup_strtod();
zend_startup_extensions_mechanism();
/* Set up utility functions and values */
zend_error_cb = utility_functions->error_function;
zend_printf = utility_functions->printf_function;
zend_write = utility_functions->write_function;
zend_fopen = utility_functions->fopen_function;
if (!zend_fopen) {
zend_fopen = zend_fopen_wrapper;
}
zend_stream_open_function = utility_functions->stream_open_function;
zend_message_dispatcher_p = utility_functions->message_handler;
zend_get_configuration_directive_p = utility_functions->get_configuration_directive;
zend_ticks_function = utility_functions->ticks_function;
zend_on_timeout = utility_functions->on_timeout;
zend_printf_to_smart_string = utility_functions->printf_to_smart_string_function;
zend_printf_to_smart_str = utility_functions->printf_to_smart_str_function;
zend_getenv = utility_functions->getenv_function;
zend_resolve_path = utility_functions->resolve_path_function;
zend_interrupt_function = NULL;
#ifdef HAVE_DTRACE
/* build with dtrace support */
{
char *tmp = getenv("USE_ZEND_DTRACE");
if (tmp && ZEND_ATOL(tmp)) {
zend_dtrace_enabled = 1;
zend_compile_file = dtrace_compile_file;
zend_execute_ex = dtrace_execute_ex;
zend_execute_internal = dtrace_execute_internal;
zend_observer_error_register(dtrace_error_notify_cb);
} else {
zend_compile_file = compile_file;
zend_execute_ex = execute_ex;
zend_execute_internal = NULL;
}
}
#else
zend_compile_file = compile_file;
zend_execute_ex = execute_ex;
zend_execute_internal = NULL;
#endif /* HAVE_DTRACE */
zend_compile_string = compile_string;
zend_throw_exception_hook = NULL;
/* Set up the default garbage collection implementation. */
gc_collect_cycles = zend_gc_collect_cycles;
zend_vm_init();
/* set up version */
zend_version_info = strdup(ZEND_CORE_VERSION_INFO);
zend_version_info_length = sizeof(ZEND_CORE_VERSION_INFO) - 1;
GLOBAL_FUNCTION_TABLE = (HashTable *) malloc(sizeof(HashTable));
GLOBAL_CLASS_TABLE = (HashTable *) malloc(sizeof(HashTable));
GLOBAL_AUTO_GLOBALS_TABLE = (HashTable *) malloc(sizeof(HashTable));
GLOBAL_CONSTANTS_TABLE = (HashTable *) malloc(sizeof(HashTable));
zend_hash_init(GLOBAL_FUNCTION_TABLE, 1024, NULL, ZEND_FUNCTION_DTOR, 1);
zend_hash_init(GLOBAL_CLASS_TABLE, 64, NULL, ZEND_CLASS_DTOR, 1);
zend_hash_init(GLOBAL_AUTO_GLOBALS_TABLE, 8, NULL, auto_global_dtor, 1);
zend_hash_init(GLOBAL_CONSTANTS_TABLE, 128, NULL, ZEND_CONSTANT_DTOR, 1);
zend_hash_init(&module_registry, 32, NULL, module_destructor_zval, 1);
zend_init_rsrc_list_dtors();
#ifdef ZTS
ts_allocate_fast_id(&compiler_globals_id, &compiler_globals_offset, sizeof(zend_compiler_globals), (ts_allocate_ctor) compiler_globals_ctor, (ts_allocate_dtor) compiler_globals_dtor);
ts_allocate_fast_id(&executor_globals_id, &executor_globals_offset, sizeof(zend_executor_globals), (ts_allocate_ctor) executor_globals_ctor, (ts_allocate_dtor) executor_globals_dtor);
ts_allocate_fast_id(&language_scanner_globals_id, &language_scanner_globals_offset, sizeof(zend_php_scanner_globals), (ts_allocate_ctor) php_scanner_globals_ctor, NULL);
ts_allocate_fast_id(&ini_scanner_globals_id, &ini_scanner_globals_offset, sizeof(zend_ini_scanner_globals), (ts_allocate_ctor) ini_scanner_globals_ctor, NULL);
compiler_globals = ts_resource(compiler_globals_id);
executor_globals = ts_resource(executor_globals_id);
compiler_globals_dtor(compiler_globals);
compiler_globals->in_compilation = 0;
compiler_globals->function_table = (HashTable *) malloc(sizeof(HashTable));
compiler_globals->class_table = (HashTable *) malloc(sizeof(HashTable));
*compiler_globals->function_table = *GLOBAL_FUNCTION_TABLE;
*compiler_globals->class_table = *GLOBAL_CLASS_TABLE;
compiler_globals->auto_globals = GLOBAL_AUTO_GLOBALS_TABLE;
zend_hash_destroy(executor_globals->zend_constants);
*executor_globals->zend_constants = *GLOBAL_CONSTANTS_TABLE;
#else
ini_scanner_globals_ctor(&ini_scanner_globals);
php_scanner_globals_ctor(&language_scanner_globals);
zend_set_default_compile_time_values();
#ifdef ZEND_WIN32
zend_get_windows_version_info(&EG(windows_version_info));
#endif
# if ZEND_MAP_PTR_KIND == ZEND_MAP_PTR_KIND_PTR
/* Create a map region, used for indirect pointers from shared to
* process memory. It's allocated once and never resized.
* All processes must map it into the same address space.
*/
CG(map_ptr_size) = 1024 * 1024; // TODO: initial size ???
CG(map_ptr_last) = 0;
CG(map_ptr_real_base) = pemalloc(CG(map_ptr_size) * sizeof(void*), 1);
CG(map_ptr_base) = ZEND_MAP_PTR_BIASED_BASE(CG(map_ptr_real_base));
# elif ZEND_MAP_PTR_KIND == ZEND_MAP_PTR_KIND_PTR_OR_OFFSET
/* Map region is going to be created and resized at run-time. */
CG(map_ptr_real_base) = NULL;
CG(map_ptr_base) = ZEND_MAP_PTR_BIASED_BASE(NULL);
CG(map_ptr_size) = 0;
CG(map_ptr_last) = 0;
# else
# error "Unknown ZEND_MAP_PTR_KIND"
# endif
#endif
EG(error_reporting) = E_ALL & ~E_NOTICE;
zend_interned_strings_init();
zend_startup_builtin_functions();
zend_register_standard_constants();
zend_register_auto_global(zend_string_init_interned("GLOBALS", sizeof("GLOBALS") - 1, 1), 1, php_auto_globals_create_globals);
#ifndef ZTS
zend_init_rsrc_plist();
zend_init_exception_op();
zend_init_call_trampoline_op();
#endif
zend_ini_startup();
#ifdef ZEND_WIN32
/* Uses INI settings, so needs to be run after it. */
php_win32_cp_setup();
#endif
zend_optimizer_startup();
#ifdef ZTS
tsrm_set_new_thread_end_handler(zend_new_thread_end_handler);
tsrm_set_shutdown_handler(zend_interned_strings_dtor);
#endif
}
/* }}} */
void zend_register_standard_ini_entries(void) /* {{{ */
{
zend_register_ini_entries_ex(ini_entries, 0, MODULE_PERSISTENT);
}
/* }}} */
/* Unlink the global (r/o) copies of the class, function and constant tables,
* and use a fresh r/w copy for the startup thread
*/
zend_result zend_post_startup(void) /* {{{ */
{
#ifdef ZTS
zend_encoding **script_encoding_list;
zend_compiler_globals *compiler_globals = ts_resource(compiler_globals_id);
zend_executor_globals *executor_globals = ts_resource(executor_globals_id);
#endif
startup_done = true;
if (zend_post_startup_cb) {
zend_result (*cb)(void) = zend_post_startup_cb;
zend_post_startup_cb = NULL;
if (cb() != SUCCESS) {
return FAILURE;
}
}
#ifdef ZTS
*GLOBAL_FUNCTION_TABLE = *compiler_globals->function_table;
*GLOBAL_CLASS_TABLE = *compiler_globals->class_table;
*GLOBAL_CONSTANTS_TABLE = *executor_globals->zend_constants;
global_map_ptr_last = compiler_globals->map_ptr_last;
short_tags_default = CG(short_tags);
compiler_options_default = CG(compiler_options);
zend_destroy_rsrc_list(&EG(persistent_list));
free(compiler_globals->function_table);
compiler_globals->function_table = NULL;
free(compiler_globals->class_table);
compiler_globals->class_table = NULL;
if (compiler_globals->map_ptr_real_base) {
free(compiler_globals->map_ptr_real_base);
}
compiler_globals->map_ptr_real_base = NULL;
compiler_globals->map_ptr_base = ZEND_MAP_PTR_BIASED_BASE(NULL);
if ((script_encoding_list = (zend_encoding **)compiler_globals->script_encoding_list)) {
compiler_globals_ctor(compiler_globals);
compiler_globals->script_encoding_list = (const zend_encoding **)script_encoding_list;
} else {
compiler_globals_ctor(compiler_globals);
}
free(EG(zend_constants));
EG(zend_constants) = NULL;
executor_globals_ctor(executor_globals);
global_persistent_list = &EG(persistent_list);
zend_copy_ini_directives();
#else
global_map_ptr_last = CG(map_ptr_last);
#endif
return SUCCESS;
}
/* }}} */
void zend_shutdown(void) /* {{{ */
{
zend_vm_dtor();
zend_destroy_rsrc_list(&EG(persistent_list));
zend_destroy_modules();
virtual_cwd_deactivate();
virtual_cwd_shutdown();
zend_hash_destroy(GLOBAL_FUNCTION_TABLE);
/* Child classes may reuse structures from parent classes, so destroy in reverse order. */
zend_hash_graceful_reverse_destroy(GLOBAL_CLASS_TABLE);
zend_hash_destroy(GLOBAL_AUTO_GLOBALS_TABLE);
free(GLOBAL_AUTO_GLOBALS_TABLE);
zend_shutdown_extensions();
free(zend_version_info);
free(GLOBAL_FUNCTION_TABLE);
free(GLOBAL_CLASS_TABLE);
zend_hash_destroy(GLOBAL_CONSTANTS_TABLE);
free(GLOBAL_CONSTANTS_TABLE);
zend_shutdown_strtod();
zend_attributes_shutdown();
#ifdef ZTS
GLOBAL_FUNCTION_TABLE = NULL;
GLOBAL_CLASS_TABLE = NULL;
GLOBAL_AUTO_GLOBALS_TABLE = NULL;
GLOBAL_CONSTANTS_TABLE = NULL;
ts_free_id(executor_globals_id);
ts_free_id(compiler_globals_id);
#else
if (CG(map_ptr_real_base)) {
free(CG(map_ptr_real_base));
CG(map_ptr_real_base) = NULL;
CG(map_ptr_base) = ZEND_MAP_PTR_BIASED_BASE(NULL);
CG(map_ptr_size) = 0;
}
if (CG(script_encoding_list)) {
free(ZEND_VOIDP(CG(script_encoding_list)));
CG(script_encoding_list) = NULL;
CG(script_encoding_list_size) = 0;
}
#endif
zend_destroy_rsrc_list_dtors();
zend_optimizer_shutdown();
startup_done = false;
}
/* }}} */
void zend_set_utility_values(zend_utility_values *utility_values) /* {{{ */
{
zend_uv = *utility_values;
}
/* }}} */
/* this should be compatible with the standard zenderror */
ZEND_COLD void zenderror(const char *error) /* {{{ */
{
CG(parse_error) = 0;
if (EG(exception)) {
/* An exception was thrown in the lexer, don't throw another in the parser. */
return;
}
zend_throw_exception(zend_ce_parse_error, error, 0);
}
/* }}} */
ZEND_API ZEND_COLD ZEND_NORETURN void _zend_bailout(const char *filename, uint32_t lineno) /* {{{ */
{
if (!EG(bailout)) {
zend_output_debug_string(1, "%s(%d) : Bailed out without a bailout address!", filename, lineno);
exit(-1);
}
gc_protect(1);
CG(unclean_shutdown) = 1;
CG(active_class_entry) = NULL;
CG(in_compilation) = 0;
CG(memoize_mode) = 0;
EG(current_execute_data) = NULL;
LONGJMP(*EG(bailout), FAILURE);
}
/* }}} */
ZEND_API size_t zend_get_page_size(void)
{
#ifdef _WIN32
SYSTEM_INFO system_info;
GetSystemInfo(&system_info);
return system_info.dwPageSize;
#elif defined(__FreeBSD__)
/* This returns the value obtained from
* the auxv vector, avoiding a syscall. */
return getpagesize();
#else
return (size_t) sysconf(_SC_PAGESIZE);
#endif
}
ZEND_API void zend_append_version_info(const zend_extension *extension) /* {{{ */
{
char *new_info;
uint32_t new_info_length;
new_info_length = (uint32_t)(sizeof(" with v, , by \n")
+ strlen(extension->name)
+ strlen(extension->version)
+ strlen(extension->copyright)
+ strlen(extension->author));
new_info = (char *) malloc(new_info_length + 1);
snprintf(new_info, new_info_length, " with %s v%s, %s, by %s\n", extension->name, extension->version, extension->copyright, extension->author);
zend_version_info = (char *) realloc(zend_version_info, zend_version_info_length+new_info_length + 1);
strncat(zend_version_info, new_info, new_info_length);
zend_version_info_length += new_info_length;
free(new_info);
}
/* }}} */
ZEND_API const char *get_zend_version(void) /* {{{ */
{
return zend_version_info;
}
/* }}} */
ZEND_API void zend_activate(void) /* {{{ */
{
#ifdef ZTS
virtual_cwd_activate();
#endif
gc_reset();
init_compiler();
init_executor();
startup_scanner();
if (CG(map_ptr_last)) {
memset(CG(map_ptr_real_base), 0, CG(map_ptr_last) * sizeof(void*));
}
zend_observer_activate();
}
/* }}} */
void zend_call_destructors(void) /* {{{ */
{
zend_try {
shutdown_destructors();
} zend_end_try();
}
/* }}} */
ZEND_API void zend_deactivate(void) /* {{{ */
{
/* we're no longer executing anything */
EG(current_execute_data) = NULL;
zend_try {
shutdown_scanner();
} zend_end_try();
/* shutdown_executor() takes care of its own bailout handling */
shutdown_executor();
zend_try {
zend_ini_deactivate();
} zend_end_try();
zend_try {
shutdown_compiler();
} zend_end_try();
zend_destroy_rsrc_list(&EG(regular_list));
/* See GH-8646: https://github.com/php/php-src/issues/8646
*
* Interned strings that hold class entries can get a corresponding slot in map_ptr for the CE cache.
* map_ptr works like a bump allocator: there is a counter which increases to allocate the next slot in the map.
*
* For class name strings in non-opcache we have:
* - on startup: permanent + interned
* - on request: interned
* For class name strings in opcache we have:
* - on startup: permanent + interned
* - on request: either not interned at all, which we can ignore because they won't get a CE cache entry
* or they were already permanent + interned
* or we get a new permanent + interned string in the opcache persistence code
*
* Notice that the map_ptr layout always has the permanent strings first, and the request strings after.
* In non-opcache, a request string may get a slot in map_ptr, and that interned request string
* gets destroyed at the end of the request. The corresponding map_ptr slot can thereafter never be used again.
* This causes map_ptr to keep reallocating to larger and larger sizes.
*
* We solve it as follows:
* We can check whether we had any interned request strings, which only happens in non-opcache.
* If we have any, we reset map_ptr to the last permanent string.
* We can't lose any permanent strings because of map_ptr's layout.
*/
if (zend_hash_num_elements(&CG(interned_strings)) > 0) {
zend_map_ptr_reset();
}
#if GC_BENCH
fprintf(stderr, "GC Statistics\n");
fprintf(stderr, "-------------\n");
fprintf(stderr, "Runs: %d\n", GC_G(gc_runs));
fprintf(stderr, "Collected: %d\n", GC_G(collected));
fprintf(stderr, "Root buffer length: %d\n", GC_G(root_buf_length));
fprintf(stderr, "Root buffer peak: %d\n\n", GC_G(root_buf_peak));
fprintf(stderr, " Possible Remove from Marked\n");
fprintf(stderr, " Root Buffered buffer grey\n");
fprintf(stderr, " -------- -------- ----------- ------\n");
fprintf(stderr, "ZVAL %8d %8d %9d %8d\n", GC_G(zval_possible_root), GC_G(zval_buffered), GC_G(zval_remove_from_buffer), GC_G(zval_marked_grey));
#endif
}
/* }}} */
ZEND_API void zend_message_dispatcher(zend_long message, const void *data) /* {{{ */
{
if (zend_message_dispatcher_p) {
zend_message_dispatcher_p(message, data);
}
}
/* }}} */
ZEND_API zval *zend_get_configuration_directive(zend_string *name) /* {{{ */
{
if (zend_get_configuration_directive_p) {
return zend_get_configuration_directive_p(name);
} else {
return NULL;
}
}
/* }}} */
#define SAVE_STACK(stack) do { \
if (CG(stack).top) { \
memcpy(&stack, &CG(stack), sizeof(zend_stack)); \
CG(stack).top = CG(stack).max = 0; \
CG(stack).elements = NULL; \
} else { \
stack.top = 0; \
} \
} while (0)
#define RESTORE_STACK(stack) do { \
if (stack.top) { \
zend_stack_destroy(&CG(stack)); \
memcpy(&CG(stack), &stack, sizeof(zend_stack)); \
} \
} while (0)
ZEND_API ZEND_COLD void zend_error_zstr_at(
int orig_type, zend_string *error_filename, uint32_t error_lineno, zend_string *message)
{
zval params[4];
zval retval;
zval orig_user_error_handler;
bool in_compilation;
zend_class_entry *saved_class_entry;
zend_stack loop_var_stack;
zend_stack delayed_oplines_stack;
int type = orig_type & E_ALL;
bool orig_record_errors;
uint32_t orig_num_errors;
zend_error_info **orig_errors;
zend_result res;
/* If we're executing a function during SCCP, count any warnings that may be emitted,
* but don't perform any other error handling. */
if (EG(capture_warnings_during_sccp)) {
ZEND_ASSERT(!(type & E_FATAL_ERRORS) && "Fatal error during SCCP");
EG(capture_warnings_during_sccp)++;
return;
}
if (EG(record_errors)) {
zend_error_info *info = emalloc(sizeof(zend_error_info));
info->type = type;
info->lineno = error_lineno;
info->filename = zend_string_copy(error_filename);
info->message = zend_string_copy(message);
/* This is very inefficient for a large number of errors.
* Use pow2 realloc if it becomes a problem. */
EG(num_errors)++;
EG(errors) = erealloc(EG(errors), sizeof(zend_error_info) * EG(num_errors));
EG(errors)[EG(num_errors)-1] = info;
}
/* Report about uncaught exception in case of fatal errors */
if (EG(exception)) {
zend_execute_data *ex;
const zend_op *opline;
if (type & E_FATAL_ERRORS) {
ex = EG(current_execute_data);
opline = NULL;
while (ex && (!ex->func || !ZEND_USER_CODE(ex->func->type))) {
ex = ex->prev_execute_data;
}
if (ex && ex->opline->opcode == ZEND_HANDLE_EXCEPTION &&
EG(opline_before_exception)) {
opline = EG(opline_before_exception);
}
zend_exception_error(EG(exception), E_WARNING);
EG(exception) = NULL;
if (opline) {
ex->opline = opline;
}
}
}
zend_observer_error_notify(type, error_filename, error_lineno, message);
/* if we don't have a user defined error handler */
if (Z_TYPE(EG(user_error_handler)) == IS_UNDEF
|| !(EG(user_error_handler_error_reporting) & type)
|| EG(error_handling) != EH_NORMAL) {
zend_error_cb(orig_type, error_filename, error_lineno, message);
} else switch (type) {
case E_ERROR:
case E_PARSE:
case E_CORE_ERROR:
case E_CORE_WARNING:
case E_COMPILE_ERROR:
case E_COMPILE_WARNING:
/* The error may not be safe to handle in user-space */
zend_error_cb(orig_type, error_filename, error_lineno, message);
break;
default:
/* Handle the error in user space */
ZVAL_STR_COPY(&params[1], message);
ZVAL_LONG(&params[0], type);
if (error_filename) {
ZVAL_STR_COPY(&params[2], error_filename);
} else {
ZVAL_NULL(&params[2]);
}
ZVAL_LONG(&params[3], error_lineno);
ZVAL_COPY_VALUE(&orig_user_error_handler, &EG(user_error_handler));
ZVAL_UNDEF(&EG(user_error_handler));
/* User error handler may include() additional PHP files.
* If an error was generated during compilation PHP will compile
* such scripts recursively, but some CG() variables may be
* inconsistent. */
in_compilation = CG(in_compilation);
if (in_compilation) {
saved_class_entry = CG(active_class_entry);
CG(active_class_entry) = NULL;
SAVE_STACK(loop_var_stack);
SAVE_STACK(delayed_oplines_stack);
CG(in_compilation) = 0;
}
orig_record_errors = EG(record_errors);
orig_num_errors = EG(num_errors);
orig_errors = EG(errors);
EG(record_errors) = false;
EG(num_errors) = 0;
EG(errors) = NULL;
res = call_user_function(CG(function_table), NULL, &orig_user_error_handler, &retval, 4, params);
EG(record_errors) = orig_record_errors;
EG(num_errors) = orig_num_errors;
EG(errors) = orig_errors;
if (res == SUCCESS) {
if (Z_TYPE(retval) != IS_UNDEF) {
if (Z_TYPE(retval) == IS_FALSE) {
zend_error_cb(orig_type, error_filename, error_lineno, message);
}
zval_ptr_dtor(&retval);
}
} else if (!EG(exception)) {
/* The user error handler failed, use built-in error handler */
zend_error_cb(orig_type, error_filename, error_lineno, message);
}
if (in_compilation) {
CG(active_class_entry) = saved_class_entry;
RESTORE_STACK(loop_var_stack);
RESTORE_STACK(delayed_oplines_stack);
CG(in_compilation) = 1;
}
zval_ptr_dtor(&params[2]);
zval_ptr_dtor(&params[1]);
if (Z_TYPE(EG(user_error_handler)) == IS_UNDEF) {
ZVAL_COPY_VALUE(&EG(user_error_handler), &orig_user_error_handler);
} else {
zval_ptr_dtor(&orig_user_error_handler);
}
break;
}
if (type == E_PARSE) {
/* eval() errors do not affect exit_status */
if (!(EG(current_execute_data) &&
EG(current_execute_data)->func &&
ZEND_USER_CODE(EG(current_execute_data)->func->type) &&
EG(current_execute_data)->opline->opcode == ZEND_INCLUDE_OR_EVAL &&
EG(current_execute_data)->opline->extended_value == ZEND_EVAL)) {
EG(exit_status) = 255;
}
}
}
/* }}} */
static ZEND_COLD void zend_error_va_list(
int orig_type, zend_string *error_filename, uint32_t error_lineno,
const char *format, va_list args)
{
zend_string *message = zend_vstrpprintf(0, format, args);
zend_error_zstr_at(orig_type, error_filename, error_lineno, message);
zend_string_release(message);
}
static ZEND_COLD void get_filename_lineno(int type, zend_string **filename, uint32_t *lineno) {
/* Obtain relevant filename and lineno */
switch (type) {
case E_CORE_ERROR:
case E_CORE_WARNING:
*filename = NULL;
*lineno = 0;
break;
case E_PARSE:
case E_COMPILE_ERROR:
case E_COMPILE_WARNING:
case E_ERROR:
case E_NOTICE:
case E_STRICT:
case E_DEPRECATED:
case E_WARNING:
case E_USER_ERROR:
case E_USER_WARNING:
case E_USER_NOTICE:
case E_USER_DEPRECATED:
case E_RECOVERABLE_ERROR:
if (zend_is_compiling()) {
*filename = zend_get_compiled_filename();
*lineno = zend_get_compiled_lineno();
} else if (zend_is_executing()) {
*filename = zend_get_executed_filename_ex();
*lineno = zend_get_executed_lineno();
} else {
*filename = NULL;
*lineno = 0;
}
break;
default:
*filename = NULL;
*lineno = 0;
break;
}
if (!*filename) {
*filename = ZSTR_KNOWN(ZEND_STR_UNKNOWN_CAPITALIZED);
}
}
ZEND_API ZEND_COLD void zend_error_at(
int type, zend_string *filename, uint32_t lineno, const char *format, ...) {
va_list args;
if (!filename) {
uint32_t dummy_lineno;
get_filename_lineno(type, &filename, &dummy_lineno);
}
va_start(args, format);
zend_error_va_list(type, filename, lineno, format, args);
va_end(args);
}
ZEND_API ZEND_COLD void zend_error(int type, const char *format, ...) {
zend_string *filename;
uint32_t lineno;
va_list args;
get_filename_lineno(type, &filename, &lineno);
va_start(args, format);
zend_error_va_list(type, filename, lineno, format, args);
va_end(args);
}
ZEND_API ZEND_COLD void zend_error_unchecked(int type, const char *format, ...) {
zend_string *filename;
uint32_t lineno;
va_list args;
get_filename_lineno(type, &filename, &lineno);
va_start(args, format);
zend_error_va_list(type, filename, lineno, format, args);
va_end(args);
}
ZEND_API ZEND_COLD ZEND_NORETURN void zend_error_at_noreturn(
int type, zend_string *filename, uint32_t lineno, const char *format, ...)
{
va_list args;
if (!filename) {
uint32_t dummy_lineno;
get_filename_lineno(type, &filename, &dummy_lineno);
}
va_start(args, format);
zend_error_va_list(type, filename, lineno, format, args);
va_end(args);
/* Should never reach this. */
abort();
}
ZEND_API ZEND_COLD ZEND_NORETURN void zend_error_noreturn(int type, const char *format, ...)
{
zend_string *filename;
uint32_t lineno;
va_list args;
get_filename_lineno(type, &filename, &lineno);
va_start(args, format);
zend_error_va_list(type, filename, lineno, format, args);
va_end(args);
/* Should never reach this. */
abort();
}
ZEND_API ZEND_COLD ZEND_NORETURN void zend_strerror_noreturn(int type, int errn, const char *message)
{
#ifdef HAVE_STRERROR_R
char b[1024];
# ifdef STRERROR_R_CHAR_P
char *buf = strerror_r(errn, b, sizeof(b));
# else
strerror_r(errn, b, sizeof(b));
char *buf = b;
# endif
#else
char *buf = strerror(errn);
#endif
zend_error_noreturn(type, "%s: %s (%d)", message, buf, errn);
}
ZEND_API ZEND_COLD void zend_error_zstr(int type, zend_string *message) {
zend_string *filename;
uint32_t lineno;
get_filename_lineno(type, &filename, &lineno);
zend_error_zstr_at(type, filename, lineno, message);
}
ZEND_API void zend_begin_record_errors(void)
{
ZEND_ASSERT(!EG(record_errors) && "Error recording already enabled");
EG(record_errors) = true;
EG(num_errors) = 0;
EG(errors) = NULL;
}
ZEND_API void zend_emit_recorded_errors(void)
{
EG(record_errors) = false;
for (uint32_t i = 0; i < EG(num_errors); i++) {
zend_error_info *error = EG(errors)[i];
zend_error_zstr_at(error->type, error->filename, error->lineno, error->message);
}
}
ZEND_API void zend_free_recorded_errors(void)
{
if (!EG(num_errors)) {
return;
}
for (uint32_t i = 0; i < EG(num_errors); i++) {
zend_error_info *info = EG(errors)[i];
zend_string_release(info->filename);
zend_string_release(info->message);
efree(info);
}
efree(EG(errors));
EG(errors) = NULL;
EG(num_errors) = 0;
}
ZEND_API ZEND_COLD void zend_throw_error(zend_class_entry *exception_ce, const char *format, ...) /* {{{ */
{
va_list va;
char *message = NULL;
if (!exception_ce) {
exception_ce = zend_ce_error;
}
/* Marker used to disable exception generation during preloading. */
if (EG(exception) == (void*)(uintptr_t)-1) {
return;
}
va_start(va, format);
zend_vspprintf(&message, 0, format, va);
//TODO: we can't convert compile-time errors to exceptions yet???
if (EG(current_execute_data) && !CG(in_compilation)) {
zend_throw_exception(exception_ce, message, 0);
} else {
zend_error(E_ERROR, "%s", message);
}
efree(message);
va_end(va);
}
/* }}} */
ZEND_API ZEND_COLD void zend_type_error(const char *format, ...) /* {{{ */
{
va_list va;
char *message = NULL;
va_start(va, format);
zend_vspprintf(&message, 0, format, va);
zend_throw_exception(zend_ce_type_error, message, 0);
efree(message);
va_end(va);
} /* }}} */
ZEND_API ZEND_COLD void zend_argument_count_error(const char *format, ...) /* {{{ */
{
va_list va;
char *message = NULL;
va_start(va, format);
zend_vspprintf(&message, 0, format, va);
zend_throw_exception(zend_ce_argument_count_error, message, 0);
efree(message);
va_end(va);
} /* }}} */
ZEND_API ZEND_COLD void zend_value_error(const char *format, ...) /* {{{ */
{
va_list va;
char *message = NULL;
va_start(va, format);
zend_vspprintf(&message, 0, format, va);
zend_throw_exception(zend_ce_value_error, message, 0);
efree(message);
va_end(va);
} /* }}} */
ZEND_API ZEND_COLD void zend_output_debug_string(bool trigger_break, const char *format, ...) /* {{{ */
{
#if ZEND_DEBUG
va_list args;
va_start(args, format);
# ifdef ZEND_WIN32
{
char output_buf[1024];
vsnprintf(output_buf, 1024, format, args);
OutputDebugString(output_buf);
OutputDebugString("\n");
if (trigger_break && IsDebuggerPresent()) {
DebugBreak();
}
}
# else
vfprintf(stderr, format, args);
fprintf(stderr, "\n");
# endif
va_end(args);
#endif
}
/* }}} */
ZEND_API ZEND_COLD void zend_user_exception_handler(void) /* {{{ */
{
zval orig_user_exception_handler;
zval params[1], retval2;
zend_object *old_exception;
if (zend_is_unwind_exit(EG(exception))) {
return;
}
old_exception = EG(exception);
EG(exception) = NULL;
ZVAL_OBJ(&params[0], old_exception);
ZVAL_COPY_VALUE(&orig_user_exception_handler, &EG(user_exception_handler));
if (call_user_function(CG(function_table), NULL, &orig_user_exception_handler, &retval2, 1, params) == SUCCESS) {
zval_ptr_dtor(&retval2);
if (EG(exception)) {
OBJ_RELEASE(EG(exception));
EG(exception) = NULL;
}
OBJ_RELEASE(old_exception);
} else {
EG(exception) = old_exception;
}
} /* }}} */
ZEND_API zend_result zend_execute_scripts(int type, zval *retval, int file_count, ...) /* {{{ */
{
va_list files;
int i;
zend_file_handle *file_handle;
zend_op_array *op_array;
zend_result ret = SUCCESS;
va_start(files, file_count);
for (i = 0; i < file_count; i++) {
file_handle = va_arg(files, zend_file_handle *);
if (!file_handle) {
continue;
}
if (ret == FAILURE) {
continue;
}
op_array = zend_compile_file(file_handle, type);
if (file_handle->opened_path) {
zend_hash_add_empty_element(&EG(included_files), file_handle->opened_path);
}
if (op_array) {
zend_execute(op_array, retval);
zend_exception_restore();
if (UNEXPECTED(EG(exception))) {
if (Z_TYPE(EG(user_exception_handler)) != IS_UNDEF) {
zend_user_exception_handler();
}
if (EG(exception)) {
ret = zend_exception_error(EG(exception), E_ERROR);
}
}
zend_destroy_static_vars(op_array);
destroy_op_array(op_array);
efree_size(op_array, sizeof(zend_op_array));
} else if (type==ZEND_REQUIRE) {
ret = FAILURE;
}
}
va_end(files);
return ret;
}
/* }}} */
#define COMPILED_STRING_DESCRIPTION_FORMAT "%s(%d) : %s"
ZEND_API char *zend_make_compiled_string_description(const char *name) /* {{{ */
{
const char *cur_filename;
int cur_lineno;
char *compiled_string_description;
if (zend_is_compiling()) {
cur_filename = ZSTR_VAL(zend_get_compiled_filename());
cur_lineno = zend_get_compiled_lineno();
} else if (zend_is_executing()) {
cur_filename = zend_get_executed_filename();
cur_lineno = zend_get_executed_lineno();
} else {
cur_filename = "Unknown";
cur_lineno = 0;
}
zend_spprintf(&compiled_string_description, 0, COMPILED_STRING_DESCRIPTION_FORMAT, cur_filename, cur_lineno, name);
return compiled_string_description;
}
/* }}} */
void free_estring(char **str_p) /* {{{ */
{
efree(*str_p);
}
/* }}} */
ZEND_API void zend_map_ptr_reset(void)
{
CG(map_ptr_last) = global_map_ptr_last;
}
ZEND_API void *zend_map_ptr_new(void)
{
void **ptr;
if (CG(map_ptr_last) >= CG(map_ptr_size)) {
#if ZEND_MAP_PTR_KIND == ZEND_MAP_PTR_KIND_PTR
// TODO: error ???
ZEND_UNREACHABLE();
#elif ZEND_MAP_PTR_KIND == ZEND_MAP_PTR_KIND_PTR_OR_OFFSET
/* Grow map_ptr table */
CG(map_ptr_size) = ZEND_MM_ALIGNED_SIZE_EX(CG(map_ptr_last) + 1, 4096);
CG(map_ptr_real_base) = perealloc(CG(map_ptr_real_base), CG(map_ptr_size) * sizeof(void*), 1);
CG(map_ptr_base) = ZEND_MAP_PTR_BIASED_BASE(CG(map_ptr_real_base));
#else
# error "Unknown ZEND_MAP_PTR_KIND"
#endif
}
ptr = (void**)CG(map_ptr_real_base) + CG(map_ptr_last);
*ptr = NULL;
CG(map_ptr_last)++;
#if ZEND_MAP_PTR_KIND == ZEND_MAP_PTR_KIND_PTR
return ptr;
#elif ZEND_MAP_PTR_KIND == ZEND_MAP_PTR_KIND_PTR_OR_OFFSET
return ZEND_MAP_PTR_PTR2OFFSET(ptr);
#else
# error "Unknown ZEND_MAP_PTR_KIND"
#endif
}
ZEND_API void zend_map_ptr_extend(size_t last)
{
if (last > CG(map_ptr_last)) {
void **ptr;
if (last >= CG(map_ptr_size)) {
#if ZEND_MAP_PTR_KIND == ZEND_MAP_PTR_KIND_PTR
/* This may never happen */
ZEND_UNREACHABLE();
#elif ZEND_MAP_PTR_KIND == ZEND_MAP_PTR_KIND_PTR_OR_OFFSET
/* Grow map_ptr table */
CG(map_ptr_size) = ZEND_MM_ALIGNED_SIZE_EX(last, 4096);
CG(map_ptr_real_base) = perealloc(CG(map_ptr_real_base), CG(map_ptr_size) * sizeof(void*), 1);
CG(map_ptr_base) = ZEND_MAP_PTR_BIASED_BASE(CG(map_ptr_real_base));
#else
# error "Unknown ZEND_MAP_PTR_KIND"
#endif
}
ptr = (void**)CG(map_ptr_real_base) + CG(map_ptr_last);
memset(ptr, 0, (last - CG(map_ptr_last)) * sizeof(void*));
CG(map_ptr_last) = last;
}
}
ZEND_API void zend_alloc_ce_cache(zend_string *type_name)
{
if (ZSTR_HAS_CE_CACHE(type_name) || !ZSTR_IS_INTERNED(type_name)) {
return;
}
if ((GC_FLAGS(type_name) & IS_STR_PERMANENT) && startup_done) {
/* Don't allocate slot on permanent interned string outside module startup.
* The cache slot would no longer be valid on the next request. */
return;
}
if (zend_string_equals_literal_ci(type_name, "self")
|| zend_string_equals_literal_ci(type_name, "parent")) {
return;
}
/* We use the refcount to keep map_ptr of corresponding type */
uint32_t ret;
do {
ret = ZEND_MAP_PTR_NEW_OFFSET();
} while (ret <= 2);
GC_ADD_FLAGS(type_name, IS_STR_CLASS_NAME_MAP_PTR);
GC_SET_REFCOUNT(type_name, ret);
}
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