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php-src/Zend/zend.c
Dmitry Stogov 1c94ff0595 Implement engine exceptions 
RFC: https://wiki.php.net/rfc/engine_exceptions_for_php7

Pending changes regarding naming of BaseException and whether it
should be an interface.
2015-03-09 14:01:32 +01:00

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/*
+----------------------------------------------------------------------+
| Zend Engine |
+----------------------------------------------------------------------+
| Copyright (c) 1998-2015 Zend Technologies Ltd. (http://www.zend.com) |
+----------------------------------------------------------------------+
| This source file is subject to version 2.00 of the Zend license, |
| that is bundled with this package in the file LICENSE, and is |
| available through the world-wide-web at the following url: |
| http://www.zend.com/license/2_00.txt. |
| If you did not receive a copy of the Zend license and are unable to |
| obtain it through the world-wide-web, please send a note to |
| license@zend.com so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Authors: Andi Gutmans <andi@zend.com> |
| Zeev Suraski <zeev@zend.com> |
+----------------------------------------------------------------------+
*/
/* $Id$ */
#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"
#ifdef ZTS
# 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
/* 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)(const char *filename, zend_string **opened_path);
ZEND_API int (*zend_stream_open_function)(const char *filename, zend_file_handle *handle);
ZEND_API void (*zend_block_interruptions)(void);
ZEND_API void (*zend_unblock_interruptions)(void);
ZEND_API void (*zend_ticks_function)(int ticks);
ZEND_API void (*zend_error_cb)(int type, const char *error_filename, const uint error_lineno, const char *format, va_list args);
size_t (*zend_vspprintf)(char **pbuf, size_t max_len, const char *format, va_list ap);
zend_string *(*zend_vstrpprintf)(size_t max_len, const char *format, va_list ap);
ZEND_API char *(*zend_getenv)(char *name, size_t name_len);
ZEND_API zend_string *(*zend_resolve_path)(const char *filename, int filename_len);
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);
static ZEND_INI_MH(OnUpdateErrorReporting) /* {{{ */
{
if (!new_value) {
EG(error_reporting) = E_ALL & ~E_NOTICE & ~E_STRICT & ~E_DEPRECATED;
} else {
EG(error_reporting) = atoi(new_value->val);
}
return SUCCESS;
}
/* }}} */
static ZEND_INI_MH(OnUpdateGCEnabled) /* {{{ */
{
OnUpdateBool(entry, new_value, mh_arg1, mh_arg2, mh_arg3, stage);
if (GC_G(gc_enabled)) {
gc_init();
}
return SUCCESS;
}
/* }}} */
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 ? new_value->val : NULL, new_value ? new_value->len : 0);
}
/* }}} */
static ZEND_INI_MH(OnUpdateAssertions) /* {{{ */
{
zend_long *p, val;
#ifndef ZTS
char *base = (char *) mh_arg2;
#else
char *base;
base = (char *) ts_resource(*((int *) mh_arg2));
#endif
p = (zend_long *) (base+(size_t) mh_arg1);
val = zend_atol(new_value->val, (int)new_value->len);
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;
}
/* }}} */
ZEND_INI_BEGIN()
ZEND_INI_ENTRY("error_reporting", NULL, ZEND_INI_ALL, OnUpdateErrorReporting)
STD_ZEND_INI_BOOLEAN("zend.assertions", "1", ZEND_INI_ALL, OnUpdateAssertions, assertions, zend_executor_globals, executor_globals)
STD_ZEND_INI_BOOLEAN("zend.enable_gc", "1", ZEND_INI_ALL, OnUpdateGCEnabled, gc_enabled, zend_gc_globals, gc_globals)
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", "0", ZEND_INI_SYSTEM, OnUpdateBool, check, zend_signal_globals_t, zend_signal_globals)
#endif
ZEND_INI_END()
#ifdef ZTS
ZEND_API int compiler_globals_id;
ZEND_API int executor_globals_id;
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;
ZEND_TSRMLS_CACHE_DEFINE();
#endif
ZEND_API zend_utility_values zend_uv;
/* version information */
static char *zend_version_info;
static uint zend_version_info_length;
#define ZEND_CORE_VERSION_INFO "Zend Engine v" ZEND_VERSION ", Copyright (c) 1998-2015 Zend Technologies\n"
#define PRINT_ZVAL_INDENT 4
static void print_hash(zend_write_func_t write_func, HashTable *ht, int indent, zend_bool is_object) /* {{{ */
{
zval *tmp;
zend_string *string_key;
zend_ulong num_key;
int i;
for (i = 0; i < indent; i++) {
ZEND_PUTS_EX(" ");
}
ZEND_PUTS_EX("(\n");
indent += PRINT_ZVAL_INDENT;
ZEND_HASH_FOREACH_KEY_VAL(ht, num_key, string_key, tmp) {
if (Z_TYPE_P(tmp) == IS_INDIRECT) {
tmp = Z_INDIRECT_P(tmp);
if (Z_TYPE_P(tmp) == IS_UNDEF) {
continue;
}
}
for (i = 0; i < indent; i++) {
ZEND_PUTS_EX(" ");
}
ZEND_PUTS_EX("[");
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);
ZEND_WRITE_EX(prop_name, prop_len);
if (class_name && mangled == SUCCESS) {
if (class_name[0]=='*') {
ZEND_PUTS_EX(":protected");
} else {
ZEND_PUTS_EX(":");
ZEND_PUTS_EX(class_name);
ZEND_PUTS_EX(":private");
}
}
} else {
ZEND_WRITE_EX(string_key->val, string_key->len);
}
} else {
char key[25];
snprintf(key, sizeof(key), ZEND_LONG_FMT, num_key);
ZEND_PUTS_EX(key);
}
ZEND_PUTS_EX("] => ");
zend_print_zval_r_ex(write_func, tmp, indent+PRINT_ZVAL_INDENT);
ZEND_PUTS_EX("\n");
} ZEND_HASH_FOREACH_END();
indent -= PRINT_ZVAL_INDENT;
for (i = 0; i < indent; i++) {
ZEND_PUTS_EX(" ");
}
ZEND_PUTS_EX(")\n");
}
/* }}} */
static void print_flat_hash(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) {
ZEND_PUTS(",");
}
ZEND_PUTS("[");
if (string_key) {
ZEND_WRITE(string_key->val, string_key->len);
} else {
zend_printf(ZEND_ULONG_FMT, num_key);
}
ZEND_PUTS("] => ");
zend_print_flat_zval_r(tmp);
} ZEND_HASH_FOREACH_END();
}
/* }}} */
ZEND_API int 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) /* {{{ */
{
return zend_print_zval_ex(zend_write, expr, indent);
}
/* }}} */
ZEND_API size_t zend_print_zval_ex(zend_write_func_t write_func, zval *expr, int indent) /* {{{ */
{
zend_string *str = zval_get_string(expr);
size_t len = str->len;
if (len != 0) {
write_func(str->val, len);
}
zend_string_release(str);
return len;
}
/* }}} */
ZEND_API void zend_print_flat_zval_r(zval *expr) /* {{{ */
{
switch (Z_TYPE_P(expr)) {
case IS_ARRAY:
ZEND_PUTS("Array (");
if (ZEND_HASH_APPLY_PROTECTION(Z_ARRVAL_P(expr)) &&
++Z_ARRVAL_P(expr)->u.v.nApplyCount>1) {
ZEND_PUTS(" *RECURSION*");
Z_ARRVAL_P(expr)->u.v.nApplyCount--;
return;
}
print_flat_hash(Z_ARRVAL_P(expr));
ZEND_PUTS(")");
if (ZEND_HASH_APPLY_PROTECTION(Z_ARRVAL_P(expr))) {
Z_ARRVAL_P(expr)->u.v.nApplyCount--;
}
break;
case IS_OBJECT:
{
HashTable *properties = NULL;
zend_string *class_name = Z_OBJ_HANDLER_P(expr, get_class_name)(Z_OBJ_P(expr));
zend_printf("%s Object (", class_name->val);
zend_string_release(class_name);
if (Z_OBJ_HANDLER_P(expr, get_properties)) {
properties = Z_OBJPROP_P(expr);
}
if (properties) {
if (++properties->u.v.nApplyCount>1) {
ZEND_PUTS(" *RECURSION*");
properties->u.v.nApplyCount--;
return;
}
print_flat_hash(properties);
properties->u.v.nApplyCount--;
}
ZEND_PUTS(")");
break;
}
default:
zend_print_variable(expr);
break;
}
}
/* }}} */
ZEND_API void zend_print_zval_r(zval *expr, int indent) /* {{{ */
{
zend_print_zval_r_ex(zend_write, expr, indent);
}
/* }}} */
ZEND_API void zend_print_zval_r_ex(zend_write_func_t write_func, zval *expr, int indent) /* {{{ */
{
ZVAL_DEREF(expr);
switch (Z_TYPE_P(expr)) {
case IS_ARRAY:
ZEND_PUTS_EX("Array\n");
if (ZEND_HASH_APPLY_PROTECTION(Z_ARRVAL_P(expr)) &&
++Z_ARRVAL_P(expr)->u.v.nApplyCount>1) {
ZEND_PUTS_EX(" *RECURSION*");
Z_ARRVAL_P(expr)->u.v.nApplyCount--;
return;
}
print_hash(write_func, Z_ARRVAL_P(expr), indent, 0);
if (ZEND_HASH_APPLY_PROTECTION(Z_ARRVAL_P(expr))) {
Z_ARRVAL_P(expr)->u.v.nApplyCount--;
}
break;
case IS_OBJECT:
{
HashTable *properties;
int is_temp;
zend_string *class_name = Z_OBJ_HANDLER_P(expr, get_class_name)(Z_OBJ_P(expr));
ZEND_PUTS_EX(class_name->val);
zend_string_release(class_name);
ZEND_PUTS_EX(" Object\n");
if ((properties = Z_OBJDEBUG_P(expr, is_temp)) == NULL) {
break;
}
if (++properties->u.v.nApplyCount>1) {
ZEND_PUTS_EX(" *RECURSION*");
properties->u.v.nApplyCount--;
return;
}
print_hash(write_func, properties, indent, 1);
properties->u.v.nApplyCount--;
if (is_temp) {
zend_hash_destroy(properties);
FREE_HASHTABLE(properties);
}
break;
}
default:
zend_print_zval_ex(write_func, expr, indent);
break;
}
}
/* }}} */
static FILE *zend_fopen_wrapper(const char *filename, zend_string **opened_path) /* {{{ */
{
if (opened_path) {
*opened_path = zend_string_init(filename, strlen(filename), 0);
}
return fopen(filename, "rb");
}
/* }}} */
#ifdef ZTS
static zend_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;
}
/* }}} */
static void zend_init_exception_op(void) /* {{{ */
{
memset(EG(exception_op), 0, sizeof(EG(exception_op)));
EG(exception_op)[0].opcode = ZEND_HANDLE_EXCEPTION;
EG(exception_op)[0].op1_type = IS_UNUSED;
EG(exception_op)[0].op2_type = IS_UNUSED;
EG(exception_op)[0].result_type = IS_UNUSED;
ZEND_VM_SET_OPCODE_HANDLER(EG(exception_op));
EG(exception_op)[1].opcode = ZEND_HANDLE_EXCEPTION;
EG(exception_op)[1].op1_type = IS_UNUSED;
EG(exception_op)[1].op2_type = IS_UNUSED;
EG(exception_op)[1].result_type = IS_UNUSED;
ZEND_VM_SET_OPCODE_HANDLER(EG(exception_op)+1);
EG(exception_op)[2].opcode = ZEND_HANDLE_EXCEPTION;
EG(exception_op)[2].op1_type = IS_UNUSED;
EG(exception_op)[2].op2_type = IS_UNUSED;
EG(exception_op)[2].result_type = IS_UNUSED;
ZEND_VM_SET_OPCODE_HANDLER(EG(exception_op)+2);
}
/* }}} */
#ifdef ZTS
static void function_copy_ctor(zval *zv)
{
zend_function *old_func = Z_FUNC_P(zv);
Z_FUNC_P(zv) = pemalloc(sizeof(zend_internal_function), 1);
memcpy(Z_FUNC_P(zv), old_func, sizeof(zend_internal_function));
function_add_ref(Z_FUNC_P(zv));
}
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_ex(compiler_globals->function_table, 1024, NULL, ZEND_FUNCTION_DTOR, 1, 0);
zend_hash_copy(compiler_globals->function_table, global_function_table, function_copy_ctor);
compiler_globals->class_table = (HashTable *) malloc(sizeof(HashTable));
zend_hash_init_ex(compiler_globals->class_table, 64, NULL, ZEND_CLASS_DTOR, 1, 0);
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_ex(compiler_globals->auto_globals, 8, NULL, NULL, 1, 0);
zend_hash_copy(compiler_globals->auto_globals, global_auto_globals_table, NULL /* empty element */);
compiler_globals->last_static_member = zend_hash_num_elements(compiler_globals->class_table);
if (compiler_globals->last_static_member) {
compiler_globals->static_members_table = calloc(compiler_globals->last_static_member, sizeof(zval*));
} else {
compiler_globals->static_members_table = NULL;
}
compiler_globals->script_encoding_list = NULL;
#ifdef ZTS
zend_interned_empty_string_init(&compiler_globals->empty_string);
memset(compiler_globals->one_char_string, 0, sizeof(compiler_globals->one_char_string));
#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) {
zend_hash_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->static_members_table) {
free(compiler_globals->static_members_table);
}
if (compiler_globals->script_encoding_list) {
pefree((char*)compiler_globals->script_encoding_list, 1);
}
compiler_globals->last_static_member = 0;
#ifdef ZTS
zend_interned_empty_string_free(&compiler_globals->empty_string);
#endif
}
/* }}} */
static void executor_globals_ctor(zend_executor_globals *executor_globals) /* {{{ */
{
ZEND_TSRMLS_CACHE_UPDATE();
zend_startup_constants();
zend_copy_constants(EG(zend_constants), GLOBAL_CONSTANTS_TABLE);
zend_init_rsrc_plist();
zend_init_exception_op();
executor_globals->lambda_count = 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;
}
/* }}} */
static void executor_globals_dtor(zend_executor_globals *executor_globals) /* {{{ */
{
#ifdef ZTS
zend_ini_dtor(executor_globals->ini_directives);
#else
zend_ini_shutdown();
#endif
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) /* {{{ */
{
if (zend_copy_ini_directives() == SUCCESS) {
zend_ini_refresh_caches(ZEND_INI_STAGE_STARTUP);
}
}
/* }}} */
#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));
}
/* }}} */
void zend_init_opcodes_handlers(void);
static void module_destructor_zval(zval *zv) /* {{{ */
{
zend_module_entry *module = (zend_module_entry*)Z_PTR_P(zv);
module_destructor(module);
free(module);
}
/* }}} */
static void auto_global_dtor(zval *zv) /* {{{ */
{
free(Z_PTR_P(zv));
}
/* }}} */
static zend_bool php_auto_globals_create_globals(zend_string *name) /* {{{ */
{
zval globals;
ZVAL_ARR(&globals, &EG(symbol_table));
Z_TYPE_INFO_P(&globals) = IS_ARRAY | (IS_TYPE_SYMBOLTABLE << Z_TYPE_FLAGS_SHIFT);
ZVAL_NEW_REF(&globals, &globals);
zend_hash_update(&EG(symbol_table), name, &globals);
return 0;
}
/* }}} */
int zend_startup(zend_utility_functions *utility_functions, char **extensions) /* {{{ */
{
#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;
ZEND_TSRMLS_CACHE_UPDATE();
#else
extern zend_ini_scanner_globals ini_scanner_globals;
extern zend_php_scanner_globals language_scanner_globals;
#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 = (zend_write_func_t) 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;
#ifndef ZEND_SIGNALS
zend_block_interruptions = utility_functions->block_interruptions;
zend_unblock_interruptions = utility_functions->unblock_interruptions;
#endif
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_vspprintf = utility_functions->vspprintf_function;
zend_vstrpprintf = utility_functions->vstrpprintf_function;
zend_getenv = utility_functions->getenv_function;
zend_resolve_path = utility_functions->resolve_path_function;
#if HAVE_DTRACE
/* build with dtrace support */
zend_compile_file = dtrace_compile_file;
zend_execute_ex = dtrace_execute_ex;
zend_execute_internal = dtrace_execute_internal;
#else
zend_compile_file = compile_file;
zend_execute_ex = execute_ex;
zend_execute_internal = NULL;
#endif /* HAVE_SYS_SDT_H */
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_init_opcodes_handlers();
/* 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_ex(GLOBAL_FUNCTION_TABLE, 1024, NULL, ZEND_FUNCTION_DTOR, 1, 0);
zend_hash_init_ex(GLOBAL_CLASS_TABLE, 64, NULL, ZEND_CLASS_DTOR, 1, 0);
zend_hash_init_ex(GLOBAL_AUTO_GLOBALS_TABLE, 8, NULL, auto_global_dtor, 1, 0);
zend_hash_init_ex(GLOBAL_CONSTANTS_TABLE, 128, NULL, ZEND_CONSTANT_DTOR, 1, 0);
zend_hash_init_ex(&module_registry, 32, NULL, module_destructor_zval, 1, 0);
zend_init_rsrc_list_dtors();
#ifdef ZTS
ts_allocate_id(&compiler_globals_id, sizeof(zend_compiler_globals), (ts_allocate_ctor) compiler_globals_ctor, (ts_allocate_dtor) compiler_globals_dtor);
ts_allocate_id(&executor_globals_id, sizeof(zend_executor_globals), (ts_allocate_ctor) executor_globals_ctor, (ts_allocate_dtor) executor_globals_dtor);
ts_allocate_id(&language_scanner_globals_id, sizeof(zend_php_scanner_globals), (ts_allocate_ctor) php_scanner_globals_ctor, NULL);
ts_allocate_id(&ini_scanner_globals_id, 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();
#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("GLOBALS", sizeof("GLOBALS") - 1, 1), 1, php_auto_globals_create_globals);
#ifndef ZTS
zend_init_rsrc_plist();
zend_init_exception_op();
#endif
zend_ini_startup();
#ifdef ZTS
tsrm_set_new_thread_end_handler(zend_new_thread_end_handler);
#endif
#ifdef ZEND_SIGNALS
zend_signal_startup();
#endif
return SUCCESS;
}
/* }}} */
void zend_register_standard_ini_entries(void) /* {{{ */
{
int module_number = 0;
REGISTER_INI_ENTRIES();
}
/* }}} */
/* Unlink the global (r/o) copies of the class, function and constant tables,
* and use a fresh r/w copy for the startup thread
*/
void 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);
*GLOBAL_FUNCTION_TABLE = *compiler_globals->function_table;
*GLOBAL_CLASS_TABLE = *compiler_globals->class_table;
*GLOBAL_CONSTANTS_TABLE = *executor_globals->zend_constants;
short_tags_default = CG(short_tags);
compiler_options_default = CG(compiler_options);
zend_destroy_rsrc_list(&EG(persistent_list));
free(compiler_globals->function_table);
free(compiler_globals->class_table);
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));
virtual_cwd_deactivate();
executor_globals_ctor(executor_globals);
global_persistent_list = &EG(persistent_list);
zend_copy_ini_directives();
#else
virtual_cwd_deactivate();
#endif
}
/* }}} */
void zend_shutdown(void) /* {{{ */
{
zend_destroy_rsrc_list(&EG(persistent_list));
if (EG(active))
{
/*
* The order of destruction is important here.
* See bugs #65463 and 66036.
*/
zend_function *func;
zend_class_entry *ce;
ZEND_HASH_REVERSE_FOREACH_PTR(GLOBAL_FUNCTION_TABLE, func) {
if (func->type == ZEND_USER_FUNCTION) {
zend_cleanup_op_array_data((zend_op_array *) func);
}
} ZEND_HASH_FOREACH_END();
ZEND_HASH_REVERSE_FOREACH_PTR(GLOBAL_CLASS_TABLE, ce) {
if (ce->type == ZEND_USER_CLASS) {
zend_cleanup_user_class_data(ce);
} else {
break;
}
} ZEND_HASH_FOREACH_END();
zend_cleanup_internal_classes();
zend_hash_reverse_apply(GLOBAL_FUNCTION_TABLE, (apply_func_t) clean_non_persistent_function_full);
zend_hash_reverse_apply(GLOBAL_CLASS_TABLE, (apply_func_t) clean_non_persistent_class_full);
}
zend_destroy_modules();
virtual_cwd_deactivate();
virtual_cwd_shutdown();
zend_hash_destroy(GLOBAL_FUNCTION_TABLE);
zend_hash_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();
#ifdef ZTS
GLOBAL_FUNCTION_TABLE = NULL;
GLOBAL_CLASS_TABLE = NULL;
GLOBAL_AUTO_GLOBALS_TABLE = NULL;
GLOBAL_CONSTANTS_TABLE = NULL;
#endif
zend_destroy_rsrc_list_dtors();
zend_interned_strings_dtor();
}
/* }}} */
void zend_set_utility_values(zend_utility_values *utility_values) /* {{{ */
{
zend_uv = *utility_values;
zend_uv.import_use_extension_length = (uint)strlen(zend_uv.import_use_extension);
}
/* }}} */
/* this should be compatible with the standard zenderror */
void zenderror(const char *error) /* {{{ */
{
zend_throw_exception(zend_get_parse_exception(), error, E_PARSE);
}
/* }}} */
BEGIN_EXTERN_C()
ZEND_API void _zend_bailout(char *filename, uint lineno) /* {{{ */
{
if (!EG(bailout)) {
zend_output_debug_string(1, "%s(%d) : Bailed out without a bailout address!", filename, lineno);
exit(-1);
}
CG(unclean_shutdown) = 1;
CG(active_class_entry) = NULL;
CG(in_compilation) = 0;
EG(current_execute_data) = NULL;
LONGJMP(*EG(bailout), FAILURE);
}
/* }}} */
END_EXTERN_C()
ZEND_API void zend_append_version_info(const zend_extension *extension) /* {{{ */
{
char *new_info;
uint new_info_length;
new_info_length = (uint)(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 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();
}
/* }}} */
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 {
shutdown_compiler();
} zend_end_try();
#if ZEND_DEBUG
if (GC_G(gc_enabled) && !CG(unclean_shutdown)) {
gc_collect_cycles();
}
#endif
zend_destroy_rsrc_list(&EG(regular_list));
#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));
fprintf(stderr, "ZOBJ %8d %8d %9d %8d\n", GC_G(zobj_possible_root), GC_G(zobj_buffered), GC_G(zobj_remove_from_buffer), GC_G(zobj_marked_grey));
#endif
zend_try {
zend_ini_deactivate();
} zend_end_try();
}
/* }}} */
BEGIN_EXTERN_C()
ZEND_API void zend_message_dispatcher(zend_long message, const void *data) /* {{{ */
{
if (zend_message_dispatcher_p) {
zend_message_dispatcher_p(message, data);
}
}
/* }}} */
END_EXTERN_C()
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)
#if !defined(HAVE_NORETURN) || defined(HAVE_NORETURN_ALIAS)
ZEND_API void zend_error(int type, const char *format, ...) /* {{{ */
#else
static void zend_error_va_list(int type, const char *format, va_list args)
#endif
{
char *str;
int len;
#if !defined(HAVE_NORETURN) || defined(HAVE_NORETURN_ALIAS)
va_list args;
#endif
va_list usr_copy;
zval params[5];
zval retval;
const char *error_filename;
uint error_lineno = 0;
zval orig_user_error_handler;
zend_bool in_compilation;
zend_class_entry *saved_class_entry;
zend_stack loop_var_stack;
zend_stack delayed_oplines_stack;
zend_stack context_stack;
zend_array *symbol_table;
if (type & E_EXCEPTION) {
char *message = NULL;
#if !defined(HAVE_NORETURN) || defined(HAVE_NORETURN_ALIAS)
va_start(args, format);
#endif
zend_vspprintf(&message, 0, format, args);
zend_throw_exception(zend_get_engine_exception(), message, type & ~E_EXCEPTION);
efree(message);
#if !defined(HAVE_NORETURN) || defined(HAVE_NORETURN_ALIAS)
va_end(args);
#endif
return;
}
/* Report about uncaught exception in case of fatal errors */
if (EG(exception)) {
zend_execute_data *ex;
const zend_op *opline;
switch (type) {
case E_CORE_ERROR:
case E_ERROR:
case E_RECOVERABLE_ERROR:
case E_PARSE:
case E_COMPILE_ERROR:
case E_USER_ERROR:
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;
}
break;
default:
break;
}
}
/* Obtain relevant filename and lineno */
switch (type) {
case E_CORE_ERROR:
case E_CORE_WARNING:
error_filename = NULL;
error_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()) {
error_filename = zend_get_compiled_filename()->val;
error_lineno = zend_get_compiled_lineno();
} else if (zend_is_executing()) {
error_filename = zend_get_executed_filename();
if (error_filename[0] == '[') { /* [no active file] */
error_filename = NULL;
error_lineno = 0;
} else {
error_lineno = zend_get_executed_lineno();
}
} else {
error_filename = NULL;
error_lineno = 0;
}
break;
default:
error_filename = NULL;
error_lineno = 0;
break;
}
if (!error_filename) {
error_filename = "Unknown";
}
#ifdef HAVE_DTRACE
if (DTRACE_ERROR_ENABLED()) {
char *dtrace_error_buffer;
#if !defined(HAVE_NORETURN) || defined(HAVE_NORETURN_ALIAS)
va_start(args, format);
#endif
zend_vspprintf(&dtrace_error_buffer, 0, format, args);
DTRACE_ERROR(dtrace_error_buffer, (char *)error_filename, error_lineno);
efree(dtrace_error_buffer);
#if !defined(HAVE_NORETURN) || defined(HAVE_NORETURN_ALIAS)
va_end(args);
#endif
}
#endif /* HAVE_DTRACE */
#if !defined(HAVE_NORETURN) || defined(HAVE_NORETURN_ALIAS)
va_start(args, format);
#endif
/* 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(type, error_filename, error_lineno, format, args);
} 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(type, error_filename, error_lineno, format, args);
break;
default:
/* Handle the error in user space */
/* va_copy() is __va_copy() in old gcc versions.
* According to the autoconf manual, using
* memcpy(&dst, &src, sizeof(va_list))
* gives maximum portability. */
#ifndef va_copy
# ifdef __va_copy
# define va_copy(dest, src) __va_copy((dest), (src))
# else
# define va_copy(dest, src) memcpy(&(dest), &(src), sizeof(va_list))
# endif
#endif
va_copy(usr_copy, args);
len = (int)zend_vspprintf(&str, 0, format, usr_copy);
ZVAL_NEW_STR(&params[1], zend_string_init(str, len, 0));
efree(str);
#ifdef va_copy
va_end(usr_copy);
#endif
ZVAL_LONG(&params[0], type);
if (error_filename) {
ZVAL_STRING(&params[2], error_filename);
} else {
ZVAL_NULL(&params[2]);
}
ZVAL_LONG(&params[3], error_lineno);
symbol_table = zend_rebuild_symbol_table();
/* during shutdown the symbol table table can be still null */
if (!symbol_table) {
ZVAL_NULL(&params[4]);
} else {
ZVAL_ARR(&params[4], zend_array_dup(symbol_table));
}
ZVAL_COPY_VALUE(&orig_user_error_handler, &EG(user_error_handler));
ZVAL_UNDEF(&EG(user_error_handler));
/* User error handler may include() additinal PHP files.
* If an error was generated during comilation PHP will compile
* such scripts recursivly, 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);
SAVE_STACK(context_stack);
CG(in_compilation) = 0;
}
ZVAL_UNDEF(&retval);
if (call_user_function_ex(CG(function_table), NULL, &orig_user_error_handler, &retval, 5, params, 1, NULL) == SUCCESS) {
if (Z_TYPE(retval) != IS_UNDEF) {
if (Z_TYPE(retval) == IS_FALSE) {
zend_error_cb(type, error_filename, error_lineno, format, args);
}
zval_ptr_dtor(&retval);
}
} else if (!EG(exception)) {
/* The user error handler failed, use built-in error handler */
zend_error_cb(type, error_filename, error_lineno, format, args);
}
if (in_compilation) {
CG(active_class_entry) = saved_class_entry;
RESTORE_STACK(loop_var_stack);
RESTORE_STACK(delayed_oplines_stack);
RESTORE_STACK(context_stack);
CG(in_compilation) = 1;
}
zval_ptr_dtor(&params[4]);
zval_ptr_dtor(&params[3]);
zval_ptr_dtor(&params[2]);
zval_ptr_dtor(&params[1]);
zval_ptr_dtor(&params[0]);
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 !defined(HAVE_NORETURN) || defined(HAVE_NORETURN_ALIAS)
va_end(args);
#endif
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;
}
}
}
/* }}} */
#ifdef HAVE_NORETURN
# ifdef HAVE_NORETURN_ALIAS
void zend_error_noreturn(int type, const char *format, ...) __attribute__ ((alias("zend_error"),noreturn));
# else
ZEND_API void zend_error(int type, const char *format, ...) /* {{{ */
{
va_list va;
va_start(va, format);
zend_error_va_list(type, format, va);
va_end(va);
}
ZEND_API ZEND_NORETURN void zend_error_noreturn(int type, const char *format, ...)
{
va_list va;
va_start(va, format);
zend_error_va_list(type, format, va);
va_end(va);
}
/* }}} */
# endif
#endif
ZEND_API void zend_output_debug_string(zend_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 int 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;
va_start(files, file_count);
for (i = 0; i < file_count; i++) {
file_handle = va_arg(files, zend_file_handle *);
if (!file_handle) {
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);
}
zend_destroy_file_handle(file_handle);
if (op_array) {
zend_execute(op_array, retval);
zend_exception_restore();
if (EG(exception)) {
if (Z_TYPE(EG(user_exception_handler)) != IS_UNDEF) {
zval orig_user_exception_handler;
zval params[1], retval2;
zend_object *old_exception;
old_exception = EG(exception);
EG(exception) = NULL;
ZVAL_OBJ(&params[0], old_exception);
ZVAL_COPY_VALUE(&orig_user_exception_handler, &EG(user_exception_handler));
ZVAL_UNDEF(&retval2);
if (call_user_function_ex(CG(function_table), NULL, &orig_user_exception_handler, &retval2, 1, params, 1, NULL) == 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_exception_error(EG(exception), E_ERROR);
}
} else {
zend_exception_error(EG(exception), E_ERROR);
}
}
destroy_op_array(op_array);
efree_size(op_array, sizeof(zend_op_array));
} else if (type==ZEND_REQUIRE) {
va_end(files);
return FAILURE;
}
}
va_end(files);
return SUCCESS;
}
/* }}} */
#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 = zend_get_compiled_filename()->val;
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);
}
/* }}} */
void free_string_zval(zval *zv) /* {{{ */
{
zend_string *str = Z_PTR_P(zv);
zend_string_release(str);
}
/* }}} */
/*
* Local variables:
* tab-width: 4
* c-basic-offset: 4
* indent-tabs-mode: t
* End:
*/
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